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-f4eb214f-m [2019-10-13 21:15:08,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:08,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:08,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:08,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:08,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:08,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:08,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:08,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:08,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:08,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:08,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:08,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:08,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:08,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:08,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:08,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:08,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:08,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:08,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:08,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:08,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:08,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:08,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:08,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:08,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:08,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:08,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:08,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:08,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:08,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:08,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:08,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:08,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:08,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:08,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:08,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:08,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:08,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:08,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:08,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:08,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:15:08,409 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:08,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:08,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:08,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:08,411 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:08,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:08,412 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:08,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:08,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:08,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:08,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:08,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:08,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:08,415 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:08,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:08,415 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:08,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:08,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:08,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:08,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:08,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:08,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:08,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:08,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:08,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:08,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:08,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:08,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:08,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:15:08,691 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:08,707 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:08,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:08,712 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:08,712 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:08,713 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product29.cil.c [2019-10-13 21:15:08,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e16ba66d/41a90bbf77ed426d98fa9f3a0fbed001/FLAGff1a8df3c [2019-10-13 21:15:09,406 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:09,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product29.cil.c [2019-10-13 21:15:09,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e16ba66d/41a90bbf77ed426d98fa9f3a0fbed001/FLAGff1a8df3c [2019-10-13 21:15:09,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e16ba66d/41a90bbf77ed426d98fa9f3a0fbed001 [2019-10-13 21:15:09,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:09,594 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:09,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:09,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:09,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:09,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:09" (1/1) ... [2019-10-13 21:15:09,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc444e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:09, skipping insertion in model container [2019-10-13 21:15:09,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:09" (1/1) ... [2019-10-13 21:15:09,609 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:09,702 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:15:10,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:10,487 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:15:10,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:10,703 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:15:10,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:10 WrapperNode [2019-10-13 21:15:10,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:10,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:15:10,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:15:10,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:15:10,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:10" (1/1) ... [2019-10-13 21:15:10,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:10" (1/1) ... [2019-10-13 21:15:10,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:10" (1/1) ... [2019-10-13 21:15:10,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:10" (1/1) ... [2019-10-13 21:15:10,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:10" (1/1) ... [2019-10-13 21:15:10,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:10" (1/1) ... [2019-10-13 21:15:10,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:10" (1/1) ... [2019-10-13 21:15:10,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:15:10,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:15:10,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:15:10,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:15:10,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:10,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:15:10,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:15:10,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:10,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:10,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:10,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:10,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:15:10,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:15:10,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:15:10,993 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:15:10,993 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:15:10,993 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:15:10,993 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:15:10,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:15:10,994 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:15:10,995 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:15:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:15:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:15:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:15:10,998 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:15:10,998 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:15:10,998 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:15:10,998 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:15:10,998 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:15:10,999 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:15:10,999 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:15:10,999 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:15:11,000 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:15:11,000 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:15:11,000 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:15:11,000 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:15:11,000 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:15:11,000 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:15:11,001 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:15:11,001 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:15:11,001 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:15:11,001 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:15:11,002 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:15:11,002 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:15:11,002 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:15:11,002 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:15:11,002 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:15:11,003 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:15:11,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:15:11,003 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:15:11,003 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:15:11,003 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:15:11,003 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:15:11,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:15:11,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:15:11,004 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:15:11,004 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:15:11,004 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:15:11,004 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:15:11,005 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:15:11,005 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:15:11,005 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:15:11,005 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:15:11,005 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:15:11,005 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:15:11,006 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:15:11,006 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:15:11,006 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:15:11,007 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:15:11,007 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:15:11,007 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:15:11,007 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:15:11,008 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:15:11,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:15:11,008 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:15:11,008 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:15:11,008 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:15:11,008 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:15:11,009 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:15:11,009 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:15:11,010 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:15:11,010 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:15:11,010 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:15:11,010 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:15:11,011 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:15:11,011 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:15:11,011 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:15:11,011 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:15:11,012 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:15:11,012 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:15:11,013 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:15:11,013 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:15:11,014 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:15:11,014 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:15:11,014 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:15:11,014 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:15:11,014 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:15:11,014 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:15:11,014 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:15:11,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:15:11,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:15:11,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:11,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:15:11,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:11,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:15:11,015 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:15:11,016 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:15:11,016 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:15:11,016 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:15:11,016 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:15:11,016 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:15:11,016 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:15:11,016 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:15:11,017 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:15:11,017 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:15:11,017 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:15:11,017 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:15:11,017 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:15:11,017 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:15:11,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:15:11,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:15:11,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:15:11,018 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:15:11,019 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:15:11,019 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:15:11,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:11,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:15:11,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:15:11,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:15:11,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:15:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:15:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:15:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:15:11,022 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:15:11,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:15:11,022 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:15:11,022 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:15:11,023 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:15:11,024 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:15:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:15:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:15:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:15:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:15:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:15:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:15:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:15:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:15:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:15:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:15:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:15:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:15:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:15:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:15:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:15:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:15:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:15:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:15:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:15:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:15:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:15:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:15:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:15:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:15:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:15:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:15:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:15:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:15:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:15:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:15:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:15:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:15:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:15:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:15:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:15:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:15:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:15:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:15:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:15:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:15:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:15:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:15:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:15:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:15:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:15:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:15:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:15:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:15:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:15:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:15:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:15:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:15:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:15:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:15:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:15:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:15:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:15:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:15:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:15:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:15:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:15:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:15:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:15:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:15:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:15:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:15:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:15:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:15:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:15:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:15:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:15:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:15:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:15:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:15:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:15:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:15:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:15:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:15:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:15:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:15:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:15:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:15:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:15:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:15:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:15:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:15:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:15:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:15:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:15:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:15:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:15:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:15:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:15:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:15:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:15:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:15:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:15:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:15:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:15:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:15:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:15:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:15:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:15:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:15:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:15:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:15:13,125 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:15:13,125 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:15:13,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:13 BoogieIcfgContainer [2019-10-13 21:15:13,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:15:13,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:15:13,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:15:13,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:15:13,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:09" (1/3) ... [2019-10-13 21:15:13,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae220af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:13, skipping insertion in model container [2019-10-13 21:15:13,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:10" (2/3) ... [2019-10-13 21:15:13,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae220af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:13, skipping insertion in model container [2019-10-13 21:15:13,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:13" (3/3) ... [2019-10-13 21:15:13,138 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product29.cil.c [2019-10-13 21:15:13,148 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:15:13,159 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:15:13,170 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:15:13,218 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:15:13,218 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:15:13,219 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:15:13,223 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:15:13,223 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:15:13,224 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:15:13,224 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:15:13,224 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:15:13,254 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2019-10-13 21:15:13,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-13 21:15:13,276 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:13,278 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] [2019-10-13 21:15:13,280 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:13,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:13,286 INFO L82 PathProgramCache]: Analyzing trace with hash -646444410, now seen corresponding path program 1 times [2019-10-13 21:15:13,297 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:13,298 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691607314] [2019-10-13 21:15:13,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:13,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:13,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:14,004 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:14,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691607314] [2019-10-13 21:15:14,006 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:14,006 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:15:14,006 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820213853] [2019-10-13 21:15:14,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:15:14,013 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:14,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:15:14,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:14,031 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 2 states. [2019-10-13 21:15:14,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:14,114 INFO L93 Difference]: Finished difference Result 859 states and 1175 transitions. [2019-10-13 21:15:14,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:15:14,118 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 218 [2019-10-13 21:15:14,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:14,157 INFO L225 Difference]: With dead ends: 859 [2019-10-13 21:15:14,158 INFO L226 Difference]: Without dead ends: 552 [2019-10-13 21:15:14,165 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:14,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2019-10-13 21:15:14,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2019-10-13 21:15:14,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2019-10-13 21:15:14,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 757 transitions. [2019-10-13 21:15:14,280 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 757 transitions. Word has length 218 [2019-10-13 21:15:14,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:14,285 INFO L462 AbstractCegarLoop]: Abstraction has 552 states and 757 transitions. [2019-10-13 21:15:14,285 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:15:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 757 transitions. [2019-10-13 21:15:14,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-10-13 21:15:14,298 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:14,298 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] [2019-10-13 21:15:14,299 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:14,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:14,299 INFO L82 PathProgramCache]: Analyzing trace with hash -884240524, now seen corresponding path program 1 times [2019-10-13 21:15:14,299 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:14,300 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505788026] [2019-10-13 21:15:14,300 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:14,300 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:14,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:14,589 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:14,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505788026] [2019-10-13 21:15:14,590 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:14,590 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:14,591 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80115307] [2019-10-13 21:15:14,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:14,594 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:14,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:14,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:14,595 INFO L87 Difference]: Start difference. First operand 552 states and 757 transitions. Second operand 3 states. [2019-10-13 21:15:14,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:14,693 INFO L93 Difference]: Finished difference Result 842 states and 1136 transitions. [2019-10-13 21:15:14,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:14,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2019-10-13 21:15:14,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:14,703 INFO L225 Difference]: With dead ends: 842 [2019-10-13 21:15:14,703 INFO L226 Difference]: Without dead ends: 555 [2019-10-13 21:15:14,709 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:14,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-10-13 21:15:14,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 554. [2019-10-13 21:15:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-10-13 21:15:14,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 759 transitions. [2019-10-13 21:15:14,759 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 759 transitions. Word has length 219 [2019-10-13 21:15:14,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:14,759 INFO L462 AbstractCegarLoop]: Abstraction has 554 states and 759 transitions. [2019-10-13 21:15:14,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:14,760 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 759 transitions. [2019-10-13 21:15:14,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-10-13 21:15:14,768 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:14,768 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] [2019-10-13 21:15:14,769 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:14,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:14,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1184170792, now seen corresponding path program 1 times [2019-10-13 21:15:14,770 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:14,770 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597032031] [2019-10-13 21:15:14,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:14,771 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:14,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:15,122 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597032031] [2019-10-13 21:15:15,123 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:15,123 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:15,123 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539071733] [2019-10-13 21:15:15,128 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:15,131 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:15,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:15,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:15,132 INFO L87 Difference]: Start difference. First operand 554 states and 759 transitions. Second operand 3 states. [2019-10-13 21:15:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:15,198 INFO L93 Difference]: Finished difference Result 1084 states and 1516 transitions. [2019-10-13 21:15:15,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:15,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2019-10-13 21:15:15,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:15,208 INFO L225 Difference]: With dead ends: 1084 [2019-10-13 21:15:15,208 INFO L226 Difference]: Without dead ends: 595 [2019-10-13 21:15:15,211 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:15,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-13 21:15:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 594. [2019-10-13 21:15:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2019-10-13 21:15:15,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 828 transitions. [2019-10-13 21:15:15,249 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 828 transitions. Word has length 225 [2019-10-13 21:15:15,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:15,250 INFO L462 AbstractCegarLoop]: Abstraction has 594 states and 828 transitions. [2019-10-13 21:15:15,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:15,250 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 828 transitions. [2019-10-13 21:15:15,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-13 21:15:15,257 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:15,259 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] [2019-10-13 21:15:15,259 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:15,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:15,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1208160604, now seen corresponding path program 1 times [2019-10-13 21:15:15,260 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:15,260 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201755734] [2019-10-13 21:15:15,260 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:15,260 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:15,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:15,871 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201755734] [2019-10-13 21:15:15,871 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230496874] [2019-10-13 21:15:15,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:16,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 2941 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:16,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:15:17,052 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:17,494 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:17,585 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:17,672 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:17,879 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:17,880 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-13 21:15:17,880 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107368130] [2019-10-13 21:15:17,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:17,881 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:17,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:17,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:15:17,882 INFO L87 Difference]: Start difference. First operand 594 states and 828 transitions. Second operand 9 states. [2019-10-13 21:15:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:19,508 INFO L93 Difference]: Finished difference Result 1166 states and 1636 transitions. [2019-10-13 21:15:19,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:19,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 226 [2019-10-13 21:15:19,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:19,516 INFO L225 Difference]: With dead ends: 1166 [2019-10-13 21:15:19,516 INFO L226 Difference]: Without dead ends: 608 [2019-10-13 21:15:19,520 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 [2019-10-13 21:15:19,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-13 21:15:19,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2019-10-13 21:15:19,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-10-13 21:15:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 846 transitions. [2019-10-13 21:15:19,570 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 846 transitions. Word has length 226 [2019-10-13 21:15:19,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:19,571 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 846 transitions. [2019-10-13 21:15:19,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:19,572 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 846 transitions. [2019-10-13 21:15:19,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-13 21:15:19,577 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:19,577 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] [2019-10-13 21:15:19,785 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:19,786 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:19,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:19,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1796617889, now seen corresponding path program 1 times [2019-10-13 21:15:19,788 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:19,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262091372] [2019-10-13 21:15:19,789 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:19,789 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:19,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:20,265 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262091372] [2019-10-13 21:15:20,265 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779154272] [2019-10-13 21:15:20,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:20,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:20,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:15:20,980 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:21,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:21,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:21,463 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:21,463 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-13 21:15:21,463 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125257646] [2019-10-13 21:15:21,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:21,465 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:21,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:21,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:21,466 INFO L87 Difference]: Start difference. First operand 608 states and 846 transitions. Second operand 7 states. [2019-10-13 21:15:22,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:22,665 INFO L93 Difference]: Finished difference Result 1167 states and 1640 transitions. [2019-10-13 21:15:22,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:22,666 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2019-10-13 21:15:22,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:22,673 INFO L225 Difference]: With dead ends: 1167 [2019-10-13 21:15:22,673 INFO L226 Difference]: Without dead ends: 610 [2019-10-13 21:15:22,677 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 446 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:15:22,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2019-10-13 21:15:22,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2019-10-13 21:15:22,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2019-10-13 21:15:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 849 transitions. [2019-10-13 21:15:22,720 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 849 transitions. Word has length 227 [2019-10-13 21:15:22,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:22,721 INFO L462 AbstractCegarLoop]: Abstraction has 610 states and 849 transitions. [2019-10-13 21:15:22,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:22,721 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 849 transitions. [2019-10-13 21:15:22,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-10-13 21:15:22,729 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:22,730 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] [2019-10-13 21:15:22,938 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:22,939 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:22,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:22,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1532844782, now seen corresponding path program 1 times [2019-10-13 21:15:22,939 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:22,940 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807673119] [2019-10-13 21:15:22,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:23,486 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:23,487 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807673119] [2019-10-13 21:15:23,487 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555936178] [2019-10-13 21:15:23,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:24,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:24,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:24,365 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:24,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:24,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:24,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:25,134 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:25,134 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:25,135 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-13 21:15:25,135 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874091558] [2019-10-13 21:15:25,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:25,136 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:25,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:25,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:15:25,137 INFO L87 Difference]: Start difference. First operand 610 states and 849 transitions. Second operand 16 states. [2019-10-13 21:15:27,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:27,096 INFO L93 Difference]: Finished difference Result 1171 states and 1640 transitions. [2019-10-13 21:15:27,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:27,096 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 228 [2019-10-13 21:15:27,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:27,102 INFO L225 Difference]: With dead ends: 1171 [2019-10-13 21:15:27,102 INFO L226 Difference]: Without dead ends: 622 [2019-10-13 21:15:27,105 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 443 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:15:27,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-10-13 21:15:27,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 620. [2019-10-13 21:15:27,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-13 21:15:27,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 860 transitions. [2019-10-13 21:15:27,132 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 860 transitions. Word has length 228 [2019-10-13 21:15:27,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:27,133 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 860 transitions. [2019-10-13 21:15:27,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:27,133 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 860 transitions. [2019-10-13 21:15:27,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-10-13 21:15:27,138 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:27,138 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] [2019-10-13 21:15:27,345 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:27,346 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:27,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:27,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1891575635, now seen corresponding path program 2 times [2019-10-13 21:15:27,347 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:27,348 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425741952] [2019-10-13 21:15:27,348 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:27,348 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:27,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:27,866 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425741952] [2019-10-13 21:15:27,866 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632985207] [2019-10-13 21:15:27,866 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:28,473 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:15:28,474 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:28,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 2319 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:15:28,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:15:28,677 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:29,122 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:29,122 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-13 21:15:29,122 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360349431] [2019-10-13 21:15:29,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:15:29,124 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:29,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:15:29,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:15:29,125 INFO L87 Difference]: Start difference. First operand 620 states and 860 transitions. Second operand 14 states. [2019-10-13 21:15:31,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:31,398 INFO L93 Difference]: Finished difference Result 2066 states and 2910 transitions. [2019-10-13 21:15:31,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:15:31,399 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 229 [2019-10-13 21:15:31,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:31,412 INFO L225 Difference]: With dead ends: 2066 [2019-10-13 21:15:31,413 INFO L226 Difference]: Without dead ends: 1792 [2019-10-13 21:15:31,417 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 454 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:15:31,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2019-10-13 21:15:31,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1470. [2019-10-13 21:15:31,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2019-10-13 21:15:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2105 transitions. [2019-10-13 21:15:31,504 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2105 transitions. Word has length 229 [2019-10-13 21:15:31,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:31,506 INFO L462 AbstractCegarLoop]: Abstraction has 1470 states and 2105 transitions. [2019-10-13 21:15:31,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:15:31,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2105 transitions. [2019-10-13 21:15:31,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-13 21:15:31,515 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:31,515 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] [2019-10-13 21:15:31,723 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:31,724 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:31,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:31,724 INFO L82 PathProgramCache]: Analyzing trace with hash -929511835, now seen corresponding path program 1 times [2019-10-13 21:15:31,725 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:31,725 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144009948] [2019-10-13 21:15:31,725 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:31,726 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:31,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:31,994 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:31,994 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144009948] [2019-10-13 21:15:31,995 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931951713] [2019-10-13 21:15:31,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:32,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 2945 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:32,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:32,889 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:33,225 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:33,306 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:33,381 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:33,507 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:33,507 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-13 21:15:33,507 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442224230] [2019-10-13 21:15:33,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:15:33,509 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:33,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:15:33,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:33,510 INFO L87 Difference]: Start difference. First operand 1470 states and 2105 transitions. Second operand 15 states. [2019-10-13 21:15:35,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:35,650 INFO L93 Difference]: Finished difference Result 2834 states and 4086 transitions. [2019-10-13 21:15:35,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:35,650 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 230 [2019-10-13 21:15:35,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:35,663 INFO L225 Difference]: With dead ends: 2834 [2019-10-13 21:15:35,663 INFO L226 Difference]: Without dead ends: 1476 [2019-10-13 21:15:35,669 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 447 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:15:35,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2019-10-13 21:15:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1470. [2019-10-13 21:15:35,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2019-10-13 21:15:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2103 transitions. [2019-10-13 21:15:35,754 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2103 transitions. Word has length 230 [2019-10-13 21:15:35,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:35,754 INFO L462 AbstractCegarLoop]: Abstraction has 1470 states and 2103 transitions. [2019-10-13 21:15:35,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:15:35,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2103 transitions. [2019-10-13 21:15:35,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-13 21:15:35,762 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:35,762 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] [2019-10-13 21:15:35,979 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:35,980 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:35,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:35,980 INFO L82 PathProgramCache]: Analyzing trace with hash -826085883, now seen corresponding path program 1 times [2019-10-13 21:15:35,980 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:35,981 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892076011] [2019-10-13 21:15:35,981 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:35,981 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:35,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:36,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892076011] [2019-10-13 21:15:36,287 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240421765] [2019-10-13 21:15:36,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:36,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:36,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:37,062 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:37,062 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:37,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:37,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:15:37,547 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:37,547 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-13 21:15:37,547 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030711485] [2019-10-13 21:15:37,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:37,551 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:37,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:37,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:15:37,552 INFO L87 Difference]: Start difference. First operand 1470 states and 2103 transitions. Second operand 12 states. [2019-10-13 21:15:38,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:38,845 INFO L93 Difference]: Finished difference Result 2295 states and 3246 transitions. [2019-10-13 21:15:38,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:15:38,845 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 231 [2019-10-13 21:15:38,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:38,854 INFO L225 Difference]: With dead ends: 2295 [2019-10-13 21:15:38,854 INFO L226 Difference]: Without dead ends: 1213 [2019-10-13 21:15:38,858 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 [2019-10-13 21:15:38,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2019-10-13 21:15:38,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1213. [2019-10-13 21:15:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2019-10-13 21:15:38,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1696 transitions. [2019-10-13 21:15:38,906 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1696 transitions. Word has length 231 [2019-10-13 21:15:38,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:38,907 INFO L462 AbstractCegarLoop]: Abstraction has 1213 states and 1696 transitions. [2019-10-13 21:15:38,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:15:38,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1696 transitions. [2019-10-13 21:15:38,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-13 21:15:38,912 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:38,912 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:39,120 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:39,121 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:39,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:39,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1191168292, now seen corresponding path program 2 times [2019-10-13 21:15:39,122 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:39,122 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332087259] [2019-10-13 21:15:39,122 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:39,123 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:39,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:39,429 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:15:39,430 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332087259] [2019-10-13 21:15:39,430 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021082780] [2019-10-13 21:15:39,430 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:40,021 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:15:40,021 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:40,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 2322 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:15:40,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:15:40,214 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:40,659 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:40,660 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15] total 27 [2019-10-13 21:15:40,660 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533137200] [2019-10-13 21:15:40,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:15:40,661 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:40,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:15:40,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2019-10-13 21:15:40,662 INFO L87 Difference]: Start difference. First operand 1213 states and 1696 transitions. Second operand 14 states. [2019-10-13 21:15:43,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:43,027 INFO L93 Difference]: Finished difference Result 4093 states and 5807 transitions. [2019-10-13 21:15:43,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:15:43,028 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 232 [2019-10-13 21:15:43,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:43,047 INFO L225 Difference]: With dead ends: 4093 [2019-10-13 21:15:43,047 INFO L226 Difference]: Without dead ends: 3538 [2019-10-13 21:15:43,052 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 [2019-10-13 21:15:43,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2019-10-13 21:15:43,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 2892. [2019-10-13 21:15:43,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2892 states. [2019-10-13 21:15:43,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 4179 transitions. [2019-10-13 21:15:43,218 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 4179 transitions. Word has length 232 [2019-10-13 21:15:43,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:43,219 INFO L462 AbstractCegarLoop]: Abstraction has 2892 states and 4179 transitions. [2019-10-13 21:15:43,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:15:43,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 4179 transitions. [2019-10-13 21:15:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-13 21:15:43,232 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:43,233 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] [2019-10-13 21:15:43,439 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:43,440 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:43,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:43,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1787294567, now seen corresponding path program 1 times [2019-10-13 21:15:43,441 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:43,441 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261620646] [2019-10-13 21:15:43,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:43,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:43,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:15:43,662 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261620646] [2019-10-13 21:15:43,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434017753] [2019-10-13 21:15:43,663 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 [2019-10-13 21:15:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:44,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:44,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:44,421 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:15:44,421 INFO L321 TraceCheckSpWp]: Computing backward predicates...