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_spec4_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:15:29,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:15:29,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:15:29,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:15:29,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:15:29,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:15:29,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:15:29,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:15:29,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:15:29,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:15:29,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:15:29,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:15:29,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:15:29,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:15:29,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:15:29,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:15:29,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:15:29,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:15:29,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:15:29,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:15:29,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:15:29,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:15:29,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:15:29,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:15:29,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:15:29,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:15:29,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:15:29,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:15:29,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:15:29,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:15:29,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:15:29,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:15:29,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:15:29,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:15:29,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:15:29,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:15:29,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:15:29,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:15:29,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:15:29,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:15:29,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:15:29,398 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:15:29,421 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:15:29,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:15:29,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:15:29,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:15:29,424 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:15:29,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:15:29,424 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:15:29,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:15:29,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:15:29,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:15:29,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:15:29,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:15:29,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:15:29,427 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:15:29,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:15:29,427 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:15:29,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:15:29,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:15:29,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:15:29,428 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:15:29,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:15:29,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:29,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:15:29,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:15:29,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:15:29,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:15:29,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:15:29,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:15:29,430 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:15:29,761 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:15:29,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:15:29,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:15:29,791 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:15:29,791 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:15:29,792 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product23.cil.c [2019-10-15 01:15:29,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48b0643b8/05fdacfd013e4ff4b9ef93a96bb0f045/FLAGafac4007d [2019-10-15 01:15:30,462 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:15:30,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product23.cil.c [2019-10-15 01:15:30,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48b0643b8/05fdacfd013e4ff4b9ef93a96bb0f045/FLAGafac4007d [2019-10-15 01:15:30,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48b0643b8/05fdacfd013e4ff4b9ef93a96bb0f045 [2019-10-15 01:15:30,663 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:15:30,664 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:15:30,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:30,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:15:30,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:15:30,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:30" (1/1) ... [2019-10-15 01:15:30,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60aa197e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:30, skipping insertion in model container [2019-10-15 01:15:30,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:30" (1/1) ... [2019-10-15 01:15:30,681 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:15:30,757 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:15:31,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:31,438 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:15:31,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:31,678 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:15:31,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:31 WrapperNode [2019-10-15 01:15:31,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:31,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:15:31,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:15:31,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:15:31,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:31" (1/1) ... [2019-10-15 01:15:31,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:31" (1/1) ... [2019-10-15 01:15:31,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:31" (1/1) ... [2019-10-15 01:15:31,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:31" (1/1) ... [2019-10-15 01:15:31,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:31" (1/1) ... [2019-10-15 01:15:31,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:31" (1/1) ... [2019-10-15 01:15:31,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:31" (1/1) ... [2019-10-15 01:15:31,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:15:31,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:15:31,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:15:31,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:15:31,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:15:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:15:31,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:31,929 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:15:31,929 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:15:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:15:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:15:31,931 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:15:31,931 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:15:31,932 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:15:31,932 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:15:31,932 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:15:31,932 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:15:31,933 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:15:31,933 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:15:31,934 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:15:31,936 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:15:31,936 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:15:31,936 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:15:31,936 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:15:31,937 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:15:31,937 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:15:31,937 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:15:31,937 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:15:31,938 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:15:31,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:15:31,938 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:15:31,938 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:15:31,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:15:31,938 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:15:31,939 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:15:31,939 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:15:31,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:31,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:31,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:31,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:15:31,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:15:31,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:15:31,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:31,942 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:15:31,942 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-15 01:15:31,942 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:15:31,942 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:15:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:15:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:15:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:15:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:15:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:15:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-15 01:15:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:15:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:15:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-15 01:15:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:15:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:15:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:15:31,945 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:15:31,945 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:15:31,945 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:15:31,945 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:15:31,945 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:15:31,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:15:31,946 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:15:31,946 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:15:31,947 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:15:31,947 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:15:31,947 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:15:31,947 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:15:31,947 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:15:31,948 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:15:31,948 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:15:31,948 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:15:31,948 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:15:31,949 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:15:31,950 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:15:31,950 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:15:31,950 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:15:31,951 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:15:31,951 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:15:31,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:15:31,952 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:15:31,952 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:15:31,952 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:15:31,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:15:31,953 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:15:31,953 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:15:31,954 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:15:31,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:15:31,956 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:15:31,956 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:15:31,956 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:15:31,956 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:31,957 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:15:31,957 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:31,957 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:15:31,957 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:15:31,957 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:15:31,958 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:15:31,958 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:15:31,958 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:15:31,958 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:15:31,959 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:15:31,959 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:15:31,959 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:15:31,959 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:15:31,959 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:15:31,960 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:15:31,960 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:15:31,960 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:15:31,960 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:15:31,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:15:31,961 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:15:31,961 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:15:31,961 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:15:31,961 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:15:31,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:15:31,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:15:31,962 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:15:31,962 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:15:31,963 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:15:31,963 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:15:31,964 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:15:31,964 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:15:31,964 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:15:31,965 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:15:31,966 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:15:31,966 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:15:31,966 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:15:31,967 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:15:31,967 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:15:31,967 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:15:31,967 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:15:31,968 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:15:31,968 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:15:31,968 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:15:31,969 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:15:31,969 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:15:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:15:31,974 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:15:31,974 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:15:31,974 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:15:31,975 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:15:31,975 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:15:31,975 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:15:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:15:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:15:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:15:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:15:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:15:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:15:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:15:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:15:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:15:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:15:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:15:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:15:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:15:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:15:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:15:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:15:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:15:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:15:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:15:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:15:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:15:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:15:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:15:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:15:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:15:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:15:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:15:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:15:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:15:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:15:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:15:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-15 01:15:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:15:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:15:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:15:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:15:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:15:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:15:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:15:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:15:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:15:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:15:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:15:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:15:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:15:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:15:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:15:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:15:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:15:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:15:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:15:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:15:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:15:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-15 01:15:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-15 01:15:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:15:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:15:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:15:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:15:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:15:31,997 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:15:31,997 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:15:31,997 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:15:31,997 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:15:31,997 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:15:31,997 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:15:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:15:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:15:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:15:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:15:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:15:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:15:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:15:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:15:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:15:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:15:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:15:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:15:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:15:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:15:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:15:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:15:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:15:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:15:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:15:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:15:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:15:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:15:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:15:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:15:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:15:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:15:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:15:34,551 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:15:34,551 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:15:34,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:34 BoogieIcfgContainer [2019-10-15 01:15:34,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:15:34,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:15:34,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:15:34,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:15:34,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:15:30" (1/3) ... [2019-10-15 01:15:34,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b149bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:34, skipping insertion in model container [2019-10-15 01:15:34,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:31" (2/3) ... [2019-10-15 01:15:34,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b149bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:34, skipping insertion in model container [2019-10-15 01:15:34,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:34" (3/3) ... [2019-10-15 01:15:34,566 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product23.cil.c [2019-10-15 01:15:34,579 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:15:34,591 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:15:34,606 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:15:34,652 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:15:34,653 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:15:34,653 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:15:34,653 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:15:34,654 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:15:34,658 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:15:34,658 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:15:34,658 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:15:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states. [2019-10-15 01:15:34,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-15 01:15:34,733 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:34,735 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:34,738 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:34,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:34,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1052555921, now seen corresponding path program 1 times [2019-10-15 01:15:34,758 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:34,758 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048332298] [2019-10-15 01:15:34,759 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:34,759 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:34,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:35,484 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:35,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048332298] [2019-10-15 01:15:35,485 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:35,486 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:15:35,486 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642636501] [2019-10-15 01:15:35,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:15:35,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:35,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:15:35,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:35,516 INFO L87 Difference]: Start difference. First operand 575 states. Second operand 2 states. [2019-10-15 01:15:35,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:35,630 INFO L93 Difference]: Finished difference Result 792 states and 1074 transitions. [2019-10-15 01:15:35,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:15:35,631 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 157 [2019-10-15 01:15:35,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:35,667 INFO L225 Difference]: With dead ends: 792 [2019-10-15 01:15:35,668 INFO L226 Difference]: Without dead ends: 524 [2019-10-15 01:15:35,678 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:35,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2019-10-15 01:15:35,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2019-10-15 01:15:35,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2019-10-15 01:15:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 716 transitions. [2019-10-15 01:15:35,775 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 716 transitions. Word has length 157 [2019-10-15 01:15:35,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:35,778 INFO L462 AbstractCegarLoop]: Abstraction has 524 states and 716 transitions. [2019-10-15 01:15:35,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:15:35,778 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 716 transitions. [2019-10-15 01:15:35,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-15 01:15:35,789 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:35,789 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:35,790 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:35,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:35,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1340998615, now seen corresponding path program 1 times [2019-10-15 01:15:35,792 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:35,792 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788988169] [2019-10-15 01:15:35,792 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:35,792 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:35,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:35,999 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788988169] [2019-10-15 01:15:35,999 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:36,000 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:36,000 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115398376] [2019-10-15 01:15:36,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:36,007 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:36,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:36,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:36,009 INFO L87 Difference]: Start difference. First operand 524 states and 716 transitions. Second operand 3 states. [2019-10-15 01:15:36,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:36,084 INFO L93 Difference]: Finished difference Result 775 states and 1040 transitions. [2019-10-15 01:15:36,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:36,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-10-15 01:15:36,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:36,089 INFO L225 Difference]: With dead ends: 775 [2019-10-15 01:15:36,090 INFO L226 Difference]: Without dead ends: 527 [2019-10-15 01:15:36,092 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:36,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2019-10-15 01:15:36,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 526. [2019-10-15 01:15:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2019-10-15 01:15:36,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 718 transitions. [2019-10-15 01:15:36,153 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 718 transitions. Word has length 158 [2019-10-15 01:15:36,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:36,153 INFO L462 AbstractCegarLoop]: Abstraction has 526 states and 718 transitions. [2019-10-15 01:15:36,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:36,154 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 718 transitions. [2019-10-15 01:15:36,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-15 01:15:36,157 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:36,157 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:36,158 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:36,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:36,158 INFO L82 PathProgramCache]: Analyzing trace with hash 919719641, now seen corresponding path program 1 times [2019-10-15 01:15:36,158 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:36,159 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950318647] [2019-10-15 01:15:36,159 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:36,159 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:36,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:36,480 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950318647] [2019-10-15 01:15:36,480 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:36,480 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:36,481 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185224465] [2019-10-15 01:15:36,482 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:36,486 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:36,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:36,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:36,487 INFO L87 Difference]: Start difference. First operand 526 states and 718 transitions. Second operand 3 states. [2019-10-15 01:15:36,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:36,559 INFO L93 Difference]: Finished difference Result 1030 states and 1437 transitions. [2019-10-15 01:15:36,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:36,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-10-15 01:15:36,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:36,572 INFO L225 Difference]: With dead ends: 1030 [2019-10-15 01:15:36,572 INFO L226 Difference]: Without dead ends: 569 [2019-10-15 01:15:36,575 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2019-10-15 01:15:36,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 568. [2019-10-15 01:15:36,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2019-10-15 01:15:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 790 transitions. [2019-10-15 01:15:36,643 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 790 transitions. Word has length 168 [2019-10-15 01:15:36,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:36,644 INFO L462 AbstractCegarLoop]: Abstraction has 568 states and 790 transitions. [2019-10-15 01:15:36,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:36,644 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 790 transitions. [2019-10-15 01:15:36,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-15 01:15:36,657 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:36,658 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:36,658 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:36,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1728319775, now seen corresponding path program 1 times [2019-10-15 01:15:36,661 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:36,661 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670587051] [2019-10-15 01:15:36,662 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:36,662 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:36,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:36,891 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670587051] [2019-10-15 01:15:36,892 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:36,892 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:36,892 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533457186] [2019-10-15 01:15:36,893 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:36,893 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:36,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:36,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:36,894 INFO L87 Difference]: Start difference. First operand 568 states and 790 transitions. Second operand 3 states. [2019-10-15 01:15:36,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:36,937 INFO L93 Difference]: Finished difference Result 1153 states and 1648 transitions. [2019-10-15 01:15:36,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:36,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2019-10-15 01:15:36,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:36,946 INFO L225 Difference]: With dead ends: 1153 [2019-10-15 01:15:36,946 INFO L226 Difference]: Without dead ends: 650 [2019-10-15 01:15:36,948 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:36,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2019-10-15 01:15:36,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 649. [2019-10-15 01:15:36,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2019-10-15 01:15:36,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 928 transitions. [2019-10-15 01:15:36,984 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 928 transitions. Word has length 169 [2019-10-15 01:15:36,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:36,985 INFO L462 AbstractCegarLoop]: Abstraction has 649 states and 928 transitions. [2019-10-15 01:15:36,985 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:36,985 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 928 transitions. [2019-10-15 01:15:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 01:15:36,989 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:36,989 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:36,990 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:36,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:36,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1843291641, now seen corresponding path program 1 times [2019-10-15 01:15:36,990 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:36,991 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180626374] [2019-10-15 01:15:36,991 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:36,991 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:36,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:37,250 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180626374] [2019-10-15 01:15:37,250 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:37,250 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:37,251 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595858772] [2019-10-15 01:15:37,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:37,251 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:37,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:37,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:37,252 INFO L87 Difference]: Start difference. First operand 649 states and 928 transitions. Second operand 3 states. [2019-10-15 01:15:37,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:37,308 INFO L93 Difference]: Finished difference Result 1390 states and 2052 transitions. [2019-10-15 01:15:37,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:37,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2019-10-15 01:15:37,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:37,318 INFO L225 Difference]: With dead ends: 1390 [2019-10-15 01:15:37,318 INFO L226 Difference]: Without dead ends: 806 [2019-10-15 01:15:37,322 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:37,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2019-10-15 01:15:37,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 805. [2019-10-15 01:15:37,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2019-10-15 01:15:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1192 transitions. [2019-10-15 01:15:37,379 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1192 transitions. Word has length 170 [2019-10-15 01:15:37,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:37,380 INFO L462 AbstractCegarLoop]: Abstraction has 805 states and 1192 transitions. [2019-10-15 01:15:37,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:37,380 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1192 transitions. [2019-10-15 01:15:37,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:15:37,386 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:37,386 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:37,387 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:37,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:37,387 INFO L82 PathProgramCache]: Analyzing trace with hash 446108159, now seen corresponding path program 1 times [2019-10-15 01:15:37,387 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:37,387 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013307634] [2019-10-15 01:15:37,388 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:37,388 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:37,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:37,598 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013307634] [2019-10-15 01:15:37,599 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:37,600 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:37,600 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938492629] [2019-10-15 01:15:37,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:37,601 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:37,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:37,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:37,602 INFO L87 Difference]: Start difference. First operand 805 states and 1192 transitions. Second operand 3 states. [2019-10-15 01:15:37,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:37,661 INFO L93 Difference]: Finished difference Result 1846 states and 2824 transitions. [2019-10-15 01:15:37,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:37,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-15 01:15:37,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:37,669 INFO L225 Difference]: With dead ends: 1846 [2019-10-15 01:15:37,670 INFO L226 Difference]: Without dead ends: 1106 [2019-10-15 01:15:37,673 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:37,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2019-10-15 01:15:37,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1105. [2019-10-15 01:15:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1105 states. [2019-10-15 01:15:37,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1696 transitions. [2019-10-15 01:15:37,728 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1696 transitions. Word has length 171 [2019-10-15 01:15:37,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:37,733 INFO L462 AbstractCegarLoop]: Abstraction has 1105 states and 1696 transitions. [2019-10-15 01:15:37,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:37,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1696 transitions. [2019-10-15 01:15:37,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-15 01:15:37,740 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:37,740 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:37,740 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:37,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:37,741 INFO L82 PathProgramCache]: Analyzing trace with hash -2000282625, now seen corresponding path program 1 times [2019-10-15 01:15:37,741 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:37,741 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380784673] [2019-10-15 01:15:37,741 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:37,742 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:37,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:38,065 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:38,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380784673] [2019-10-15 01:15:38,066 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:38,066 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:15:38,066 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596226812] [2019-10-15 01:15:38,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:38,067 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:38,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:38,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:15:38,068 INFO L87 Difference]: Start difference. First operand 1105 states and 1696 transitions. Second operand 7 states. [2019-10-15 01:15:41,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:41,279 INFO L93 Difference]: Finished difference Result 1593 states and 2336 transitions. [2019-10-15 01:15:41,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:15:41,279 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2019-10-15 01:15:41,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:41,289 INFO L225 Difference]: With dead ends: 1593 [2019-10-15 01:15:41,289 INFO L226 Difference]: Without dead ends: 1356 [2019-10-15 01:15:41,291 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:15:41,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2019-10-15 01:15:41,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1347. [2019-10-15 01:15:41,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1347 states. [2019-10-15 01:15:41,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2013 transitions. [2019-10-15 01:15:41,368 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2013 transitions. Word has length 174 [2019-10-15 01:15:41,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:41,369 INFO L462 AbstractCegarLoop]: Abstraction has 1347 states and 2013 transitions. [2019-10-15 01:15:41,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:41,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2013 transitions. [2019-10-15 01:15:41,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-15 01:15:41,375 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:41,376 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:41,376 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:41,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:41,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1175251605, now seen corresponding path program 1 times [2019-10-15 01:15:41,377 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:41,377 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375525735] [2019-10-15 01:15:41,377 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:41,377 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:41,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:41,764 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:41,765 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375525735] [2019-10-15 01:15:41,765 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:41,765 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-15 01:15:41,765 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577422591] [2019-10-15 01:15:41,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-15 01:15:41,766 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:41,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-15 01:15:41,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:15:41,767 INFO L87 Difference]: Start difference. First operand 1347 states and 2013 transitions. Second operand 18 states. [2019-10-15 01:15:42,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:42,231 INFO L93 Difference]: Finished difference Result 1920 states and 2781 transitions. [2019-10-15 01:15:42,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 01:15:42,231 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 175 [2019-10-15 01:15:42,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:42,244 INFO L225 Difference]: With dead ends: 1920 [2019-10-15 01:15:42,244 INFO L226 Difference]: Without dead ends: 1435 [2019-10-15 01:15:42,249 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:15:42,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2019-10-15 01:15:42,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1433. [2019-10-15 01:15:42,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1433 states. [2019-10-15 01:15:42,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2132 transitions. [2019-10-15 01:15:42,344 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2132 transitions. Word has length 175 [2019-10-15 01:15:42,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:42,345 INFO L462 AbstractCegarLoop]: Abstraction has 1433 states and 2132 transitions. [2019-10-15 01:15:42,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-15 01:15:42,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2132 transitions. [2019-10-15 01:15:42,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-15 01:15:42,354 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:42,355 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:42,355 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:42,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:42,355 INFO L82 PathProgramCache]: Analyzing trace with hash -2007814747, now seen corresponding path program 1 times [2019-10-15 01:15:42,356 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:42,356 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414863127] [2019-10-15 01:15:42,356 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:42,356 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:42,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:42,574 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414863127] [2019-10-15 01:15:42,575 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:42,576 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:15:42,577 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958600732] [2019-10-15 01:15:42,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:15:42,578 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:42,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:15:42,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:15:42,579 INFO L87 Difference]: Start difference. First operand 1433 states and 2132 transitions. Second operand 8 states. [2019-10-15 01:15:43,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:43,538 INFO L93 Difference]: Finished difference Result 2436 states and 3467 transitions. [2019-10-15 01:15:43,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:43,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2019-10-15 01:15:43,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:43,552 INFO L225 Difference]: With dead ends: 2436 [2019-10-15 01:15:43,552 INFO L226 Difference]: Without dead ends: 2043 [2019-10-15 01:15:43,555 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:15:43,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2019-10-15 01:15:43,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 2024. [2019-10-15 01:15:43,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2024 states. [2019-10-15 01:15:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2922 transitions. [2019-10-15 01:15:43,665 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2922 transitions. Word has length 184 [2019-10-15 01:15:43,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:43,666 INFO L462 AbstractCegarLoop]: Abstraction has 2024 states and 2922 transitions. [2019-10-15 01:15:43,666 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:15:43,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2922 transitions. [2019-10-15 01:15:43,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-15 01:15:43,674 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:43,674 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:43,674 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:43,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:43,675 INFO L82 PathProgramCache]: Analyzing trace with hash -202279434, now seen corresponding path program 1 times [2019-10-15 01:15:43,675 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:43,675 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525243811] [2019-10-15 01:15:43,676 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:43,676 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:43,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:43,974 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525243811] [2019-10-15 01:15:43,974 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:43,975 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-10-15 01:15:43,975 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768629228] [2019-10-15 01:15:43,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-15 01:15:43,976 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:43,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-15 01:15:43,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:15:43,976 INFO L87 Difference]: Start difference. First operand 2024 states and 2922 transitions. Second operand 17 states. [2019-10-15 01:15:44,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:44,899 INFO L93 Difference]: Finished difference Result 2579 states and 3658 transitions. [2019-10-15 01:15:44,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 01:15:44,900 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 185 [2019-10-15 01:15:44,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:44,921 INFO L225 Difference]: With dead ends: 2579 [2019-10-15 01:15:44,921 INFO L226 Difference]: Without dead ends: 2023 [2019-10-15 01:15:44,926 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:15:44,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2019-10-15 01:15:45,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 2022. [2019-10-15 01:15:45,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2022 states. [2019-10-15 01:15:45,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2917 transitions. [2019-10-15 01:15:45,082 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2917 transitions. Word has length 185 [2019-10-15 01:15:45,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:45,082 INFO L462 AbstractCegarLoop]: Abstraction has 2022 states and 2917 transitions. [2019-10-15 01:15:45,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-15 01:15:45,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2917 transitions. [2019-10-15 01:15:45,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-15 01:15:45,090 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:45,090 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:45,091 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:45,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:45,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1555104262, now seen corresponding path program 2 times [2019-10-15 01:15:45,092 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:45,092 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063461179] [2019-10-15 01:15:45,092 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:45,092 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:45,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:45,328 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:45,329 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063461179] [2019-10-15 01:15:45,329 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302912190] [2019-10-15 01:15:45,330 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 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:45,831 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:15:45,831 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:45,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 2120 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 01:15:45,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:46,134 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:46,674 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:46,675 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:46,675 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-15 01:15:46,675 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138185346] [2019-10-15 01:15:46,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:15:46,677 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:46,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:15:46,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:15:46,678 INFO L87 Difference]: Start difference. First operand 2022 states and 2917 transitions. Second operand 14 states. [2019-10-15 01:15:49,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:49,029 INFO L93 Difference]: Finished difference Result 6038 states and 8818 transitions. [2019-10-15 01:15:49,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:15:49,029 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 185 [2019-10-15 01:15:49,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:49,076 INFO L225 Difference]: With dead ends: 6038 [2019-10-15 01:15:49,076 INFO L226 Difference]: Without dead ends: 6035 [2019-10-15 01:15:49,082 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 364 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:15:49,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6035 states. [2019-10-15 01:15:49,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6035 to 4838. [2019-10-15 01:15:49,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4838 states. [2019-10-15 01:15:49,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4838 states to 4838 states and 7239 transitions. [2019-10-15 01:15:49,547 INFO L78 Accepts]: Start accepts. Automaton has 4838 states and 7239 transitions. Word has length 185 [2019-10-15 01:15:49,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:49,548 INFO L462 AbstractCegarLoop]: Abstraction has 4838 states and 7239 transitions. [2019-10-15 01:15:49,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:15:49,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4838 states and 7239 transitions. [2019-10-15 01:15:49,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-15 01:15:49,579 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:49,579 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:49,790 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:49,790 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:49,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:49,791 INFO L82 PathProgramCache]: Analyzing trace with hash 340485956, now seen corresponding path program 1 times [2019-10-15 01:15:49,791 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:49,791 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009575731] [2019-10-15 01:15:49,791 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:49,791 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:49,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-15 01:15:50,114 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009575731] [2019-10-15 01:15:50,114 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044745969] [2019-10-15 01:15:50,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:50,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 2742 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:50,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:15:50,935 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:51,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:51,361 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:51,444 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 01:15:51,563 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:51,564 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 9] total 24 [2019-10-15 01:15:51,564 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240794056] [2019-10-15 01:15:51,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:15:51,565 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:51,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:15:51,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-10-15 01:15:51,566 INFO L87 Difference]: Start difference. First operand 4838 states and 7239 transitions. Second operand 9 states. [2019-10-15 01:15:52,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:52,993 INFO L93 Difference]: Finished difference Result 9650 states and 14452 transitions. [2019-10-15 01:15:52,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:15:52,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 187 [2019-10-15 01:15:52,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:53,027 INFO L225 Difference]: With dead ends: 9650 [2019-10-15 01:15:53,027 INFO L226 Difference]: Without dead ends: 4856 [2019-10-15 01:15:53,047 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 358 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:15:53,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2019-10-15 01:15:53,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2019-10-15 01:15:53,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2019-10-15 01:15:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 7260 transitions. [2019-10-15 01:15:53,298 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 7260 transitions. Word has length 187 [2019-10-15 01:15:53,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:53,299 INFO L462 AbstractCegarLoop]: Abstraction has 4856 states and 7260 transitions. [2019-10-15 01:15:53,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:15:53,299 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 7260 transitions. [2019-10-15 01:15:53,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-15 01:15:53,318 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:53,318 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:53,527 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:53,528 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:53,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:53,529 INFO L82 PathProgramCache]: Analyzing trace with hash 480017068, now seen corresponding path program 1 times [2019-10-15 01:15:53,529 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:53,529 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287523212] [2019-10-15 01:15:53,530 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:53,530 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:53,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-15 01:15:53,732 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287523212] [2019-10-15 01:15:53,733 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001841615] [2019-10-15 01:15:53,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:55,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:55,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:15:55,130 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:55,408 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:55,455 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:55,506 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:55,506 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 7] total 20 [2019-10-15 01:15:55,506 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002173416] [2019-10-15 01:15:55,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:55,507 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:55,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:55,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:15:55,508 INFO L87 Difference]: Start difference. First operand 4856 states and 7260 transitions. Second operand 7 states. [2019-10-15 01:15:56,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:56,539 INFO L93 Difference]: Finished difference Result 9620 states and 14417 transitions. [2019-10-15 01:15:56,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:15:56,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2019-10-15 01:15:56,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:56,572 INFO L225 Difference]: With dead ends: 9620 [2019-10-15 01:15:56,573 INFO L226 Difference]: Without dead ends: 4856 [2019-10-15 01:15:56,595 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 365 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2019-10-15 01:15:56,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2019-10-15 01:15:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2019-10-15 01:15:56,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2019-10-15 01:15:56,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 7238 transitions. [2019-10-15 01:15:56,816 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 7238 transitions. Word has length 188 [2019-10-15 01:15:56,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:56,817 INFO L462 AbstractCegarLoop]: Abstraction has 4856 states and 7238 transitions. [2019-10-15 01:15:56,817 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:56,817 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 7238 transitions. [2019-10-15 01:15:56,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-15 01:15:56,836 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:56,837 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:57,045 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:57,046 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:57,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:57,046 INFO L82 PathProgramCache]: Analyzing trace with hash 471856773, now seen corresponding path program 1 times [2019-10-15 01:15:57,047 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:57,047 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034610324] [2019-10-15 01:15:57,047 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:57,048 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:57,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:57,232 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034610324] [2019-10-15 01:15:57,233 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124614924] [2019-10-15 01:15:57,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:57,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:57,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:57,936 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:58,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:58,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:58,313 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:58,313 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:15:58,313 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638736649] [2019-10-15 01:15:58,314 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:58,314 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:58,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:58,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:15:58,320 INFO L87 Difference]: Start difference. First operand 4856 states and 7238 transitions. Second operand 7 states. [2019-10-15 01:15:59,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:59,719 INFO L93 Difference]: Finished difference Result 8847 states and 13053 transitions. [2019-10-15 01:15:59,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:15:59,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2019-10-15 01:15:59,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:59,746 INFO L225 Difference]: With dead ends: 8847 [2019-10-15 01:15:59,746 INFO L226 Difference]: Without dead ends: 4868 [2019-10-15 01:15:59,763 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 367 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:15:59,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4868 states. [2019-10-15 01:16:00,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4868 to 4856. [2019-10-15 01:16:00,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2019-10-15 01:16:00,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 7236 transitions. [2019-10-15 01:16:00,034 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 7236 transitions. Word has length 189 [2019-10-15 01:16:00,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:00,035 INFO L462 AbstractCegarLoop]: Abstraction has 4856 states and 7236 transitions. [2019-10-15 01:16:00,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:16:00,035 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 7236 transitions. [2019-10-15 01:16:00,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-15 01:16:00,054 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:00,054 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-15 01:16:00,262 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:00,263 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:00,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:00,264 INFO L82 PathProgramCache]: Analyzing trace with hash -2126926583, now seen corresponding path program 1 times [2019-10-15 01:16:00,264 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:00,264 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935661820] [2019-10-15 01:16:00,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:00,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:00,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:00,393 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:16:00,393 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935661820] [2019-10-15 01:16:00,393 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863466389] [2019-10-15 01:16:00,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:00,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 2736 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:16:01,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:16:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:16:01,140 INFO L321 TraceCheckSpWp]: Computing backward predicates...