java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:14:02,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:14:02,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:14:02,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:14:02,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:14:02,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:14:02,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:14:02,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:14:02,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:14:02,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:14:02,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:14:02,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:14:02,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:14:02,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:14:02,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:14:02,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:14:02,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:14:02,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:14:02,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:14:02,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:14:02,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:14:02,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:14:02,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:14:02,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:14:02,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:14:02,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:14:02,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:14:02,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:14:02,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:14:02,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:14:02,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:14:02,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:14:02,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:14:02,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:14:02,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:14:02,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:14:02,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:14:02,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:14:02,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:14:02,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:14:02,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:14:02,586 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 [2019-10-15 01:14:02,620 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:14:02,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:14:02,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:14:02,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:14:02,625 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:14:02,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:14:02,625 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:14:02,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:14:02,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:14:02,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:14:02,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:14:02,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:14:02,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:14:02,627 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:14:02,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:14:02,627 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:14:02,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:14:02,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:14:02,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:14:02,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:14:02,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:14:02,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:02,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:14:02,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:14:02,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:14:02,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:14:02,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:14:02,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:14:02,632 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 [2019-10-15 01:14:02,938 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:14:02,952 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:14:02,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:14:02,958 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:14:02,958 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:14:02,959 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product29.cil.c [2019-10-15 01:14:03,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5a255686/fa4a89e277da4feaaf623906f8f02814/FLAG6206fdd2d [2019-10-15 01:14:03,704 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:14:03,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product29.cil.c [2019-10-15 01:14:03,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5a255686/fa4a89e277da4feaaf623906f8f02814/FLAG6206fdd2d [2019-10-15 01:14:03,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5a255686/fa4a89e277da4feaaf623906f8f02814 [2019-10-15 01:14:03,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:14:03,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:14:03,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:03,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:14:03,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:14:03,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:03" (1/1) ... [2019-10-15 01:14:03,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1172d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:03, skipping insertion in model container [2019-10-15 01:14:03,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:03" (1/1) ... [2019-10-15 01:14:03,941 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:14:04,010 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:14:04,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:04,724 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:14:04,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:04,978 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:14:04,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:04 WrapperNode [2019-10-15 01:14:04,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:04,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:14:04,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:14:04,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:14:04,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:04" (1/1) ... [2019-10-15 01:14:04,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:04" (1/1) ... [2019-10-15 01:14:05,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:04" (1/1) ... [2019-10-15 01:14:05,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:04" (1/1) ... [2019-10-15 01:14:05,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:04" (1/1) ... [2019-10-15 01:14:05,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:04" (1/1) ... [2019-10-15 01:14:05,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:04" (1/1) ... [2019-10-15 01:14:05,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:14:05,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:14:05,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:14:05,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:14:05,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:04" (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 [2019-10-15 01:14:05,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:14:05,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:14:05,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:05,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:05,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:05,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:05,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:14:05,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:14:05,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:14:05,275 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:14:05,276 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:14:05,276 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:14:05,276 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:14:05,277 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:14:05,277 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:14:05,277 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:14:05,280 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:14:05,280 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:14:05,280 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:14:05,280 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:14:05,281 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:14:05,281 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:14:05,281 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:14:05,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:14:05,282 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:14:05,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:14:05,282 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:14:05,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:14:05,283 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:14:05,283 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:14:05,283 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:14:05,283 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:14:05,283 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:14:05,283 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:14:05,284 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:14:05,284 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:14:05,284 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:14:05,285 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:14:05,285 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:14:05,285 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:14:05,285 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:14:05,285 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:14:05,285 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:14:05,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:14:05,286 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:14:05,286 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-15 01:14:05,286 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:14:05,286 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:14:05,286 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:14:05,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:14:05,287 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:14:05,287 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:14:05,287 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:14:05,287 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:14:05,287 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:14:05,288 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-15 01:14:05,288 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-15 01:14:05,288 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:14:05,288 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:14:05,288 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:14:05,289 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:14:05,289 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:14:05,289 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:14:05,289 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:14:05,289 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:14:05,290 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:14:05,290 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:14:05,290 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:14:05,290 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:14:05,290 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:14:05,290 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:14:05,290 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:14:05,291 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:14:05,291 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:14:05,292 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:14:05,292 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:14:05,292 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:14:05,292 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:14:05,292 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:14:05,293 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:14:05,293 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:14:05,293 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:14:05,293 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:14:05,293 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:14:05,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:14:05,294 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:14:05,295 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:14:05,296 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:14:05,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:14:05,296 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:14:05,296 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:14:05,296 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:14:05,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:14:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:14:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:14:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:14:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:14:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:05,298 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:14:05,298 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:14:05,298 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:14:05,298 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:14:05,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:14:05,298 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:14:05,298 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:14:05,299 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:14:05,299 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:14:05,299 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:14:05,299 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:14:05,299 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:14:05,299 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:14:05,299 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:14:05,300 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:14:05,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:14:05,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:14:05,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:14:05,301 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:14:05,301 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:14:05,301 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:14:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:14:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:14:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:14:05,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:14:05,303 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:05,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:14:05,304 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:05,304 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:05,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:14:05,304 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:14:05,305 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:14:05,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:14:05,305 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:14:05,305 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:14:05,305 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:14:05,306 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:14:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:14:05,310 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:14:05,310 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:14:05,311 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:14:05,311 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:14:05,311 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:14:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:14:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:14:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:14:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:14:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:14:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:14:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:14:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:14:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:14:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:14:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:14:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:14:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:14:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:14:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:14:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:14:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:14:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:14:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:14:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:14:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:14:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:14:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:14:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:14:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:14:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:14:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:14:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:14:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:14:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:14:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:14:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:14:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:14:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:14:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:14:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:14:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:14:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:14:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:14:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:14:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:14:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:14:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-15 01:14:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:14:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:14:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:14:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:14:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:14:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:14:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:14:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:14:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:14:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:14:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:14:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:14:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:14:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:14:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:14:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:14:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:14:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:14:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:14:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:14:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:14:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:14:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:14:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:14:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:14:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:14:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:14:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:14:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:14:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:14:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:14:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:14:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:14:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:14:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-15 01:14:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-15 01:14:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:14:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:14:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:14:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:14:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:14:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:14:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:14:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:14:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:14:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:14:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:14:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:14:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:14:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:14:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:14:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:14:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:14:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:14:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:14:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:14:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:14:07,626 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:14:07,627 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:14:07,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:07 BoogieIcfgContainer [2019-10-15 01:14:07,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:14:07,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:14:07,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:14:07,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:14:07,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:14:03" (1/3) ... [2019-10-15 01:14:07,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d3a963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:07, skipping insertion in model container [2019-10-15 01:14:07,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:04" (2/3) ... [2019-10-15 01:14:07,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d3a963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:07, skipping insertion in model container [2019-10-15 01:14:07,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:07" (3/3) ... [2019-10-15 01:14:07,637 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product29.cil.c [2019-10-15 01:14:07,647 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:14:07,658 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:14:07,670 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:14:07,710 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:14:07,710 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:14:07,711 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:14:07,715 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:14:07,715 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:14:07,715 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:14:07,716 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:14:07,716 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:14:07,758 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2019-10-15 01:14:07,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-15 01:14:07,798 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:07,803 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:07,806 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:07,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:07,814 INFO L82 PathProgramCache]: Analyzing trace with hash -646444410, now seen corresponding path program 1 times [2019-10-15 01:14:07,825 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:07,825 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599520326] [2019-10-15 01:14:07,826 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:07,826 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:07,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:08,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599520326] [2019-10-15 01:14:08,681 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:08,682 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:14:08,682 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415407373] [2019-10-15 01:14:08,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:14:08,692 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:08,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:14:08,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:14:08,710 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 2 states. [2019-10-15 01:14:08,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:08,845 INFO L93 Difference]: Finished difference Result 859 states and 1175 transitions. [2019-10-15 01:14:08,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:14:08,846 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 218 [2019-10-15 01:14:08,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:08,885 INFO L225 Difference]: With dead ends: 859 [2019-10-15 01:14:08,885 INFO L226 Difference]: Without dead ends: 552 [2019-10-15 01:14:08,896 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 [2019-10-15 01:14:08,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2019-10-15 01:14:09,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2019-10-15 01:14:09,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2019-10-15 01:14:09,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 757 transitions. [2019-10-15 01:14:09,011 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 757 transitions. Word has length 218 [2019-10-15 01:14:09,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:09,013 INFO L462 AbstractCegarLoop]: Abstraction has 552 states and 757 transitions. [2019-10-15 01:14:09,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:14:09,014 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 757 transitions. [2019-10-15 01:14:09,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-10-15 01:14:09,020 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:09,021 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:09,021 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:09,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:09,021 INFO L82 PathProgramCache]: Analyzing trace with hash -884240524, now seen corresponding path program 1 times [2019-10-15 01:14:09,022 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:09,022 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001217091] [2019-10-15 01:14:09,022 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:09,022 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:09,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:09,351 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001217091] [2019-10-15 01:14:09,352 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:09,352 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:09,352 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662028245] [2019-10-15 01:14:09,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:09,356 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:09,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:09,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:09,357 INFO L87 Difference]: Start difference. First operand 552 states and 757 transitions. Second operand 3 states. [2019-10-15 01:14:09,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:09,450 INFO L93 Difference]: Finished difference Result 842 states and 1136 transitions. [2019-10-15 01:14:09,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:09,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2019-10-15 01:14:09,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:09,457 INFO L225 Difference]: With dead ends: 842 [2019-10-15 01:14:09,457 INFO L226 Difference]: Without dead ends: 555 [2019-10-15 01:14:09,460 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 [2019-10-15 01:14:09,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-10-15 01:14:09,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 554. [2019-10-15 01:14:09,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-10-15 01:14:09,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 759 transitions. [2019-10-15 01:14:09,510 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 759 transitions. Word has length 219 [2019-10-15 01:14:09,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:09,513 INFO L462 AbstractCegarLoop]: Abstraction has 554 states and 759 transitions. [2019-10-15 01:14:09,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:09,514 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 759 transitions. [2019-10-15 01:14:09,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-10-15 01:14:09,523 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:09,523 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:09,523 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:09,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:09,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1184170792, now seen corresponding path program 1 times [2019-10-15 01:14:09,524 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:09,524 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242693667] [2019-10-15 01:14:09,525 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:09,525 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:09,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:09,789 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:09,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242693667] [2019-10-15 01:14:09,790 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:09,790 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:09,790 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487049488] [2019-10-15 01:14:09,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:09,791 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:09,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:09,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:09,792 INFO L87 Difference]: Start difference. First operand 554 states and 759 transitions. Second operand 3 states. [2019-10-15 01:14:09,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:09,839 INFO L93 Difference]: Finished difference Result 1084 states and 1516 transitions. [2019-10-15 01:14:09,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:09,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2019-10-15 01:14:09,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:09,844 INFO L225 Difference]: With dead ends: 1084 [2019-10-15 01:14:09,845 INFO L226 Difference]: Without dead ends: 595 [2019-10-15 01:14:09,847 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 [2019-10-15 01:14:09,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-15 01:14:09,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 594. [2019-10-15 01:14:09,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2019-10-15 01:14:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 828 transitions. [2019-10-15 01:14:09,871 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 828 transitions. Word has length 225 [2019-10-15 01:14:09,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:09,872 INFO L462 AbstractCegarLoop]: Abstraction has 594 states and 828 transitions. [2019-10-15 01:14:09,872 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:09,872 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 828 transitions. [2019-10-15 01:14:09,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-15 01:14:09,878 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:09,878 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:09,878 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:09,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:09,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1208160604, now seen corresponding path program 1 times [2019-10-15 01:14:09,879 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:09,879 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377175630] [2019-10-15 01:14:09,879 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:09,880 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:09,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:10,583 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:10,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377175630] [2019-10-15 01:14:10,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57942424] [2019-10-15 01:14:10,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:11,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 2941 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:11,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:14:11,710 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:12,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:12,243 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:12,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:12,529 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:12,529 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-15 01:14:12,529 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574699101] [2019-10-15 01:14:12,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:14:12,530 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:12,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:14:12,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:14:12,531 INFO L87 Difference]: Start difference. First operand 594 states and 828 transitions. Second operand 9 states. [2019-10-15 01:14:13,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:13,899 INFO L93 Difference]: Finished difference Result 1166 states and 1636 transitions. [2019-10-15 01:14:13,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:14:13,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 226 [2019-10-15 01:14:13,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:13,904 INFO L225 Difference]: With dead ends: 1166 [2019-10-15 01:14:13,904 INFO L226 Difference]: Without dead ends: 608 [2019-10-15 01:14:13,907 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 439 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:14:13,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-15 01:14:13,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2019-10-15 01:14:13,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-10-15 01:14:13,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 846 transitions. [2019-10-15 01:14:13,946 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 846 transitions. Word has length 226 [2019-10-15 01:14:13,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:13,947 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 846 transitions. [2019-10-15 01:14:13,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:14:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 846 transitions. [2019-10-15 01:14:13,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-15 01:14:13,954 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:13,954 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:14,155 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:14,156 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:14,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:14,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1796617889, now seen corresponding path program 1 times [2019-10-15 01:14:14,158 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:14,158 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297156364] [2019-10-15 01:14:14,159 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:14,159 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:14,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:14,637 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297156364] [2019-10-15 01:14:14,637 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086383470] [2019-10-15 01:14:14,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:15,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:15,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:14:15,352 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:15,685 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:15,749 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:15,817 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:15,817 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:15,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-15 01:14:15,818 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707298767] [2019-10-15 01:14:15,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:15,818 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:15,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:15,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:15,819 INFO L87 Difference]: Start difference. First operand 608 states and 846 transitions. Second operand 7 states. [2019-10-15 01:14:16,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:16,839 INFO L93 Difference]: Finished difference Result 1167 states and 1640 transitions. [2019-10-15 01:14:16,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:16,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2019-10-15 01:14:16,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:16,844 INFO L225 Difference]: With dead ends: 1167 [2019-10-15 01:14:16,845 INFO L226 Difference]: Without dead ends: 610 [2019-10-15 01:14:16,847 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 446 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-15 01:14:16,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2019-10-15 01:14:16,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2019-10-15 01:14:16,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2019-10-15 01:14:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 849 transitions. [2019-10-15 01:14:16,874 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 849 transitions. Word has length 227 [2019-10-15 01:14:16,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:16,875 INFO L462 AbstractCegarLoop]: Abstraction has 610 states and 849 transitions. [2019-10-15 01:14:16,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:16,875 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 849 transitions. [2019-10-15 01:14:16,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-10-15 01:14:16,881 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:16,881 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:17,088 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:17,088 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:17,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:17,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1532844782, now seen corresponding path program 1 times [2019-10-15 01:14:17,089 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:17,090 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404232133] [2019-10-15 01:14:17,090 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:17,090 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:17,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:17,518 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404232133] [2019-10-15 01:14:17,518 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105986877] [2019-10-15 01:14:17,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:18,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:18,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:18,303 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:18,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:18,767 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:18,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:18,970 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:18,970 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-15 01:14:18,970 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023614712] [2019-10-15 01:14:18,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:14:18,971 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:18,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:14:18,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:14:18,973 INFO L87 Difference]: Start difference. First operand 610 states and 849 transitions. Second operand 16 states. [2019-10-15 01:14:20,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:20,801 INFO L93 Difference]: Finished difference Result 1171 states and 1640 transitions. [2019-10-15 01:14:20,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:20,802 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 228 [2019-10-15 01:14:20,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:20,807 INFO L225 Difference]: With dead ends: 1171 [2019-10-15 01:14:20,807 INFO L226 Difference]: Without dead ends: 622 [2019-10-15 01:14:20,810 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 443 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-15 01:14:20,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-10-15 01:14:20,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 620. [2019-10-15 01:14:20,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-15 01:14:20,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 860 transitions. [2019-10-15 01:14:20,836 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 860 transitions. Word has length 228 [2019-10-15 01:14:20,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:20,837 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 860 transitions. [2019-10-15 01:14:20,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:14:20,837 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 860 transitions. [2019-10-15 01:14:20,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-10-15 01:14:20,841 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:20,842 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:21,057 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:21,058 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:21,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:21,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1891575635, now seen corresponding path program 2 times [2019-10-15 01:14:21,059 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:21,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621072554] [2019-10-15 01:14:21,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:21,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:21,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:21,589 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:21,589 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621072554] [2019-10-15 01:14:21,589 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165547097] [2019-10-15 01:14:21,590 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:22,118 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:14:22,119 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:22,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 2319 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:14:22,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:14:22,358 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:22,926 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:22,927 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-15 01:14:22,927 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816635619] [2019-10-15 01:14:22,928 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:14:22,928 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:22,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:14:22,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:14:22,929 INFO L87 Difference]: Start difference. First operand 620 states and 860 transitions. Second operand 14 states. [2019-10-15 01:14:24,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:24,976 INFO L93 Difference]: Finished difference Result 2066 states and 2910 transitions. [2019-10-15 01:14:24,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:14:24,977 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 229 [2019-10-15 01:14:24,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:24,989 INFO L225 Difference]: With dead ends: 2066 [2019-10-15 01:14:24,990 INFO L226 Difference]: Without dead ends: 1792 [2019-10-15 01:14:24,993 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 454 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-15 01:14:24,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2019-10-15 01:14:25,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1470. [2019-10-15 01:14:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2019-10-15 01:14:25,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2105 transitions. [2019-10-15 01:14:25,085 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2105 transitions. Word has length 229 [2019-10-15 01:14:25,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:25,087 INFO L462 AbstractCegarLoop]: Abstraction has 1470 states and 2105 transitions. [2019-10-15 01:14:25,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:14:25,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2105 transitions. [2019-10-15 01:14:25,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-15 01:14:25,094 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:25,094 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:25,301 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:25,302 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:25,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:25,303 INFO L82 PathProgramCache]: Analyzing trace with hash -929511835, now seen corresponding path program 1 times [2019-10-15 01:14:25,304 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:25,304 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128559790] [2019-10-15 01:14:25,304 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:25,305 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:25,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:25,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128559790] [2019-10-15 01:14:25,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159074295] [2019-10-15 01:14:25,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:26,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 2945 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:26,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:26,506 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:26,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:26,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:27,088 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:27,238 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:27,238 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-15 01:14:27,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639455530] [2019-10-15 01:14:27,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:14:27,240 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:27,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:14:27,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:27,241 INFO L87 Difference]: Start difference. First operand 1470 states and 2105 transitions. Second operand 15 states. [2019-10-15 01:14:29,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:29,151 INFO L93 Difference]: Finished difference Result 2834 states and 4086 transitions. [2019-10-15 01:14:29,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:29,151 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 230 [2019-10-15 01:14:29,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:29,160 INFO L225 Difference]: With dead ends: 2834 [2019-10-15 01:14:29,160 INFO L226 Difference]: Without dead ends: 1476 [2019-10-15 01:14:29,165 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 447 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:14:29,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2019-10-15 01:14:29,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1470. [2019-10-15 01:14:29,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2019-10-15 01:14:29,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2103 transitions. [2019-10-15 01:14:29,227 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2103 transitions. Word has length 230 [2019-10-15 01:14:29,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:29,227 INFO L462 AbstractCegarLoop]: Abstraction has 1470 states and 2103 transitions. [2019-10-15 01:14:29,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:14:29,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2103 transitions. [2019-10-15 01:14:29,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-15 01:14:29,233 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:29,234 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:29,440 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:29,441 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:29,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:29,442 INFO L82 PathProgramCache]: Analyzing trace with hash -826085883, now seen corresponding path program 1 times [2019-10-15 01:14:29,442 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:29,442 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753787292] [2019-10-15 01:14:29,443 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:29,443 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:29,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:29,724 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753787292] [2019-10-15 01:14:29,724 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554561437] [2019-10-15 01:14:29,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:30,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:30,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:30,499 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:30,778 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:30,835 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:14:30,962 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:30,962 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-15 01:14:30,962 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200885968] [2019-10-15 01:14:30,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:14:30,963 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:30,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:14:30,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:14:30,964 INFO L87 Difference]: Start difference. First operand 1470 states and 2103 transitions. Second operand 12 states. [2019-10-15 01:14:32,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:32,235 INFO L93 Difference]: Finished difference Result 2295 states and 3246 transitions. [2019-10-15 01:14:32,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:14:32,236 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 231 [2019-10-15 01:14:32,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:32,244 INFO L225 Difference]: With dead ends: 2295 [2019-10-15 01:14:32,244 INFO L226 Difference]: Without dead ends: 1213 [2019-10-15 01:14:32,248 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 454 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:32,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2019-10-15 01:14:32,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1213. [2019-10-15 01:14:32,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2019-10-15 01:14:32,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1696 transitions. [2019-10-15 01:14:32,300 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1696 transitions. Word has length 231 [2019-10-15 01:14:32,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:32,301 INFO L462 AbstractCegarLoop]: Abstraction has 1213 states and 1696 transitions. [2019-10-15 01:14:32,301 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:14:32,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1696 transitions. [2019-10-15 01:14:32,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-15 01:14:32,307 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:32,308 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:32,523 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:32,524 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:32,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:32,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1191168292, now seen corresponding path program 2 times [2019-10-15 01:14:32,525 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:32,525 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294061758] [2019-10-15 01:14:32,525 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:32,526 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:32,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:32,833 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:14:32,834 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294061758] [2019-10-15 01:14:32,834 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941201301] [2019-10-15 01:14:32,834 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:33,503 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:14:33,504 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:33,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 2322 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:14:33,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:14:33,719 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:34,174 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:34,174 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15] total 27 [2019-10-15 01:14:34,175 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115947252] [2019-10-15 01:14:34,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:14:34,176 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:34,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:14:34,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:14:34,177 INFO L87 Difference]: Start difference. First operand 1213 states and 1696 transitions. Second operand 14 states. [2019-10-15 01:14:36,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:36,223 INFO L93 Difference]: Finished difference Result 4093 states and 5807 transitions. [2019-10-15 01:14:36,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:14:36,223 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 232 [2019-10-15 01:14:36,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:36,244 INFO L225 Difference]: With dead ends: 4093 [2019-10-15 01:14:36,245 INFO L226 Difference]: Without dead ends: 3538 [2019-10-15 01:14:36,249 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 461 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2019-10-15 01:14:36,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2019-10-15 01:14:36,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 2892. [2019-10-15 01:14:36,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2892 states. [2019-10-15 01:14:36,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 4179 transitions. [2019-10-15 01:14:36,439 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 4179 transitions. Word has length 232 [2019-10-15 01:14:36,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:36,440 INFO L462 AbstractCegarLoop]: Abstraction has 2892 states and 4179 transitions. [2019-10-15 01:14:36,440 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:14:36,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 4179 transitions. [2019-10-15 01:14:36,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-15 01:14:36,465 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:36,465 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:36,678 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:36,679 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:36,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:36,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1787294567, now seen corresponding path program 1 times [2019-10-15 01:14:36,680 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:36,680 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820129534] [2019-10-15 01:14:36,680 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:36,680 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:36,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:14:36,892 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820129534] [2019-10-15 01:14:36,892 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192123665] [2019-10-15 01:14:36,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:37,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:37,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:37,659 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:14:37,660 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:37,939 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:37,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:14:38,037 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:38,037 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:14:38,037 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091117142] [2019-10-15 01:14:38,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:38,038 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:38,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:38,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:14:38,039 INFO L87 Difference]: Start difference. First operand 2892 states and 4179 transitions. Second operand 7 states.