java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec11_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:12:33,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:12:33,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:12:33,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:12:33,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:12:33,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:12:33,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:12:33,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:12:33,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:12:33,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:12:33,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:12:33,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:12:33,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:12:33,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:12:33,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:12:33,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:12:33,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:12:33,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:12:33,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:12:33,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:12:33,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:12:33,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:12:33,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:12:33,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:12:33,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:12:33,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:12:33,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:12:33,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:12:33,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:12:33,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:12:33,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:12:33,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:12:33,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:12:33,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:12:33,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:12:33,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:12:33,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:12:33,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:12:33,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:12:33,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:12:33,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:12:33,670 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 01:12:33,694 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:12:33,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:12:33,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:12:33,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:12:33,697 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:12:33,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:12:33,698 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:12:33,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:12:33,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:12:33,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:12:33,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:12:33,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:12:33,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:12:33,700 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:12:33,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:12:33,701 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:12:33,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:12:33,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:12:33,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:12:33,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:12:33,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:12:33,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:12:33,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:12:33,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:12:33,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:12:33,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:12:33,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:12:33,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:12:33,704 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 01:12:34,019 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:12:34,043 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:12:34,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:12:34,047 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:12:34,048 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:12:34,049 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product22.cil.c [2019-10-15 01:12:34,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a1bb4ac/a03e8942d7ff438684df01fda2ece3d5/FLAG710c5e56d [2019-10-15 01:12:34,841 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:12:34,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product22.cil.c [2019-10-15 01:12:34,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a1bb4ac/a03e8942d7ff438684df01fda2ece3d5/FLAG710c5e56d [2019-10-15 01:12:34,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a1bb4ac/a03e8942d7ff438684df01fda2ece3d5 [2019-10-15 01:12:34,986 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:12:34,988 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:12:34,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:12:34,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:12:34,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:12:34,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:12:34" (1/1) ... [2019-10-15 01:12:34,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247dfb19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:34, skipping insertion in model container [2019-10-15 01:12:34,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:12:34" (1/1) ... [2019-10-15 01:12:35,009 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:12:35,088 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:12:35,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:12:35,875 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:12:36,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:12:36,181 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:12:36,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:36 WrapperNode [2019-10-15 01:12:36,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:12:36,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:12:36,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:12:36,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:12:36,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:36" (1/1) ... [2019-10-15 01:12:36,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:36" (1/1) ... [2019-10-15 01:12:36,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:36" (1/1) ... [2019-10-15 01:12:36,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:36" (1/1) ... [2019-10-15 01:12:36,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:36" (1/1) ... [2019-10-15 01:12:36,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:36" (1/1) ... [2019-10-15 01:12:36,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:36" (1/1) ... [2019-10-15 01:12:36,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:12:36,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:12:36,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:12:36,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:12:36,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:36" (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 01:12:36,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:12:36,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:12:36,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:12:36,487 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:12:36,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-10-15 01:12:36,488 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:12:36,488 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:12:36,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:12:36,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:12:36,489 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:12:36,489 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:12:36,489 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:12:36,489 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:12:36,490 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:12:36,490 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:12:36,490 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:12:36,490 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-10-15 01:12:36,491 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:12:36,491 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:12:36,491 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:12:36,491 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:12:36,492 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:12:36,492 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:12:36,492 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:12:36,492 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:12:36,493 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:12:36,493 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:12:36,493 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:12:36,493 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:12:36,493 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:12:36,494 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:12:36,494 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:12:36,494 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:12:36,494 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:12:36,494 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:12:36,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:12:36,495 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:12:36,495 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:12:36,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:12:36,495 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:12:36,495 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:12:36,496 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:12:36,496 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:12:36,496 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:12:36,496 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:12:36,496 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:12:36,497 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:12:36,497 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:12:36,497 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:12:36,497 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:12:36,497 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:12:36,497 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:12:36,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:12:36,498 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:12:36,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:12:36,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:12:36,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:12:36,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:12:36,499 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:12:36,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:12:36,499 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:12:36,499 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:12:36,499 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:12:36,500 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:12:36,500 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:12:36,500 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:12:36,500 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:12:36,500 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:12:36,501 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:12:36,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:12:36,501 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:12:36,501 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:12:36,501 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:12:36,502 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:12:36,502 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:12:36,502 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:12:36,502 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:12:36,502 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:12:36,503 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:12:36,503 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:12:36,503 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:12:36,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:12:36,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:12:36,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:12:36,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:12:36,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:12:36,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:12:36,504 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:12:36,504 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:12:36,505 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:12:36,505 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:12:36,505 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:12:36,505 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:12:36,505 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:12:36,506 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:12:36,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:12:36,506 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:12:36,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:12:36,506 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:12:36,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:12:36,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:12:36,507 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:12:36,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:12:36,507 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:12:36,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:12:36,507 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:12:36,508 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:12:36,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:12:36,508 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:12:36,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:12:36,508 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:12:36,509 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:12:36,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:12:36,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:12:36,509 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:12:36,509 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:12:36,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:12:36,510 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:12:36,510 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:12:36,510 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:12:36,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-10-15 01:12:36,510 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:12:36,511 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:12:36,511 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:12:36,511 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:12:36,511 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:12:36,511 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:12:36,512 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:12:36,512 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:12:36,512 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:12:36,512 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:12:36,512 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:12:36,512 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:12:36,513 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:12:36,513 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:12:36,513 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:12:36,513 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:12:36,513 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:12:36,513 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:12:36,513 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:12:36,514 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:12:36,514 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:12:36,514 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:12:36,514 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:12:36,514 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:12:36,514 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:12:36,515 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:12:36,515 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:12:36,515 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:12:36,515 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:12:36,515 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:12:36,515 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:12:36,516 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:12:36,516 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:12:36,516 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:12:36,516 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:12:36,516 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:12:36,516 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:12:36,516 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-10-15 01:12:36,517 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:12:36,517 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:12:36,517 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:12:36,517 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:12:36,517 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:12:36,517 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:12:36,517 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:12:36,518 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:12:36,518 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:12:36,518 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:12:36,518 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:12:36,518 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:12:36,518 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:12:36,518 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:12:36,518 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:12:36,519 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:12:36,519 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:12:36,519 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:12:36,519 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:12:36,519 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:12:36,519 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:12:36,519 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:12:36,520 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:12:36,520 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:12:36,520 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:12:36,520 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:12:36,520 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:12:36,520 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:12:36,521 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:12:36,521 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:12:36,521 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:12:36,521 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:12:36,521 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:12:36,521 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:12:36,521 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:12:36,521 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:12:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:12:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:12:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:12:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:12:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:12:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:12:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:12:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:12:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:12:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:12:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:12:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:12:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:12:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:12:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:12:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:12:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:12:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:12:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:12:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:12:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:12:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:12:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:12:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:12:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:12:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:12:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:12:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:12:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:12:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:12:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:12:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:12:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:12:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:12:36,527 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:12:36,527 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:12:36,527 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:12:36,527 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:12:36,527 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:12:36,527 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:12:36,527 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:12:36,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:12:36,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:12:36,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:12:38,514 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:12:38,515 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:12:38,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:12:38 BoogieIcfgContainer [2019-10-15 01:12:38,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:12:38,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:12:38,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:12:38,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:12:38,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:12:34" (1/3) ... [2019-10-15 01:12:38,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8acf03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:12:38, skipping insertion in model container [2019-10-15 01:12:38,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:36" (2/3) ... [2019-10-15 01:12:38,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8acf03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:12:38, skipping insertion in model container [2019-10-15 01:12:38,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:12:38" (3/3) ... [2019-10-15 01:12:38,528 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec11_product22.cil.c [2019-10-15 01:12:38,539 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:12:38,552 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:12:38,563 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:12:38,612 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:12:38,612 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:12:38,612 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:12:38,613 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:12:38,613 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:12:38,613 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:12:38,613 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:12:38,613 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:12:38,652 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states. [2019-10-15 01:12:38,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-15 01:12:38,689 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:38,694 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:38,697 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:38,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:38,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1913832913, now seen corresponding path program 1 times [2019-10-15 01:12:38,719 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:38,719 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702596575] [2019-10-15 01:12:38,724 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:38,724 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:38,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:39,388 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 01:12:39,389 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702596575] [2019-10-15 01:12:39,390 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:39,390 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:12:39,391 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877811267] [2019-10-15 01:12:39,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:12:39,400 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:39,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:12:39,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:12:39,417 INFO L87 Difference]: Start difference. First operand 505 states. Second operand 2 states. [2019-10-15 01:12:39,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:39,534 INFO L93 Difference]: Finished difference Result 741 states and 977 transitions. [2019-10-15 01:12:39,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:12:39,536 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 186 [2019-10-15 01:12:39,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:39,578 INFO L225 Difference]: With dead ends: 741 [2019-10-15 01:12:39,578 INFO L226 Difference]: Without dead ends: 482 [2019-10-15 01:12:39,589 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 01:12:39,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2019-10-15 01:12:39,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2019-10-15 01:12:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2019-10-15 01:12:39,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 638 transitions. [2019-10-15 01:12:39,693 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 638 transitions. Word has length 186 [2019-10-15 01:12:39,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:39,695 INFO L462 AbstractCegarLoop]: Abstraction has 482 states and 638 transitions. [2019-10-15 01:12:39,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:12:39,696 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 638 transitions. [2019-10-15 01:12:39,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-15 01:12:39,701 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:39,702 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:39,702 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:39,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:39,703 INFO L82 PathProgramCache]: Analyzing trace with hash -593424949, now seen corresponding path program 1 times [2019-10-15 01:12:39,703 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:39,703 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285009285] [2019-10-15 01:12:39,703 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:39,704 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:39,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:40,023 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 01:12:40,024 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285009285] [2019-10-15 01:12:40,024 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:40,024 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:12:40,024 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50922598] [2019-10-15 01:12:40,033 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:12:40,034 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:40,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:12:40,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:40,034 INFO L87 Difference]: Start difference. First operand 482 states and 638 transitions. Second operand 3 states. [2019-10-15 01:12:40,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:40,174 INFO L93 Difference]: Finished difference Result 724 states and 942 transitions. [2019-10-15 01:12:40,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:12:40,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2019-10-15 01:12:40,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:40,183 INFO L225 Difference]: With dead ends: 724 [2019-10-15 01:12:40,183 INFO L226 Difference]: Without dead ends: 485 [2019-10-15 01:12:40,188 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 01:12:40,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2019-10-15 01:12:40,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 484. [2019-10-15 01:12:40,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2019-10-15 01:12:40,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 640 transitions. [2019-10-15 01:12:40,269 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 640 transitions. Word has length 187 [2019-10-15 01:12:40,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:40,273 INFO L462 AbstractCegarLoop]: Abstraction has 484 states and 640 transitions. [2019-10-15 01:12:40,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:12:40,273 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 640 transitions. [2019-10-15 01:12:40,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-10-15 01:12:40,283 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:40,284 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:40,284 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:40,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:40,285 INFO L82 PathProgramCache]: Analyzing trace with hash -463058359, now seen corresponding path program 1 times [2019-10-15 01:12:40,285 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:40,286 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405826646] [2019-10-15 01:12:40,286 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:40,286 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:40,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:40,593 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 01:12:40,593 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405826646] [2019-10-15 01:12:40,593 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:40,594 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:12:40,594 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039591110] [2019-10-15 01:12:40,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:12:40,599 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:40,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:12:40,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:40,600 INFO L87 Difference]: Start difference. First operand 484 states and 640 transitions. Second operand 3 states. [2019-10-15 01:12:40,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:40,652 INFO L93 Difference]: Finished difference Result 946 states and 1281 transitions. [2019-10-15 01:12:40,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:12:40,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2019-10-15 01:12:40,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:40,660 INFO L225 Difference]: With dead ends: 946 [2019-10-15 01:12:40,661 INFO L226 Difference]: Without dead ends: 527 [2019-10-15 01:12:40,663 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 01:12:40,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2019-10-15 01:12:40,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 526. [2019-10-15 01:12:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2019-10-15 01:12:40,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 712 transitions. [2019-10-15 01:12:40,703 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 712 transitions. Word has length 199 [2019-10-15 01:12:40,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:40,706 INFO L462 AbstractCegarLoop]: Abstraction has 526 states and 712 transitions. [2019-10-15 01:12:40,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:12:40,706 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 712 transitions. [2019-10-15 01:12:40,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-15 01:12:40,715 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:40,716 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:40,716 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:40,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:40,717 INFO L82 PathProgramCache]: Analyzing trace with hash -364676623, now seen corresponding path program 1 times [2019-10-15 01:12:40,717 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:40,717 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557848540] [2019-10-15 01:12:40,718 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:40,718 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:40,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:40,948 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 01:12:40,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557848540] [2019-10-15 01:12:40,952 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:40,952 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:12:40,952 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528900101] [2019-10-15 01:12:40,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:12:40,953 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:40,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:12:40,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:40,956 INFO L87 Difference]: Start difference. First operand 526 states and 712 transitions. Second operand 3 states. [2019-10-15 01:12:41,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:41,006 INFO L93 Difference]: Finished difference Result 1069 states and 1492 transitions. [2019-10-15 01:12:41,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:12:41,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2019-10-15 01:12:41,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:41,012 INFO L225 Difference]: With dead ends: 1069 [2019-10-15 01:12:41,013 INFO L226 Difference]: Without dead ends: 608 [2019-10-15 01:12:41,015 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 01:12:41,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-15 01:12:41,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 607. [2019-10-15 01:12:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2019-10-15 01:12:41,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 850 transitions. [2019-10-15 01:12:41,048 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 850 transitions. Word has length 200 [2019-10-15 01:12:41,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:41,048 INFO L462 AbstractCegarLoop]: Abstraction has 607 states and 850 transitions. [2019-10-15 01:12:41,049 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:12:41,049 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 850 transitions. [2019-10-15 01:12:41,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-15 01:12:41,053 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:41,054 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:41,054 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:41,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:41,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1850375443, now seen corresponding path program 1 times [2019-10-15 01:12:41,055 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:41,055 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619905145] [2019-10-15 01:12:41,055 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:41,056 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:41,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:41,461 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 01:12:41,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619905145] [2019-10-15 01:12:41,463 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:41,463 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-15 01:12:41,463 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823902877] [2019-10-15 01:12:41,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-15 01:12:41,464 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:41,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-15 01:12:41,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:12:41,466 INFO L87 Difference]: Start difference. First operand 607 states and 850 transitions. Second operand 19 states. [2019-10-15 01:12:46,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:46,081 INFO L93 Difference]: Finished difference Result 1925 states and 2678 transitions. [2019-10-15 01:12:46,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-15 01:12:46,082 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 203 [2019-10-15 01:12:46,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:46,094 INFO L225 Difference]: With dead ends: 1925 [2019-10-15 01:12:46,094 INFO L226 Difference]: Without dead ends: 1699 [2019-10-15 01:12:46,097 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-10-15 01:12:46,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2019-10-15 01:12:46,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1662. [2019-10-15 01:12:46,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1662 states. [2019-10-15 01:12:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2334 transitions. [2019-10-15 01:12:46,184 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2334 transitions. Word has length 203 [2019-10-15 01:12:46,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:46,185 INFO L462 AbstractCegarLoop]: Abstraction has 1662 states and 2334 transitions. [2019-10-15 01:12:46,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-15 01:12:46,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2334 transitions. [2019-10-15 01:12:46,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-15 01:12:46,192 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:46,193 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:46,193 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:46,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:46,194 INFO L82 PathProgramCache]: Analyzing trace with hash -956589383, now seen corresponding path program 1 times [2019-10-15 01:12:46,194 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:46,194 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194842271] [2019-10-15 01:12:46,194 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:46,195 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:46,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:46,569 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 01:12:46,570 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194842271] [2019-10-15 01:12:46,571 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:46,571 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-15 01:12:46,571 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129895591] [2019-10-15 01:12:46,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:12:46,572 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:46,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:12:46,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:12:46,573 INFO L87 Difference]: Start difference. First operand 1662 states and 2334 transitions. Second operand 15 states. [2019-10-15 01:12:49,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:49,989 INFO L93 Difference]: Finished difference Result 2719 states and 3748 transitions. [2019-10-15 01:12:49,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-15 01:12:49,989 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 204 [2019-10-15 01:12:49,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:50,003 INFO L225 Difference]: With dead ends: 2719 [2019-10-15 01:12:50,003 INFO L226 Difference]: Without dead ends: 1764 [2019-10-15 01:12:50,009 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-10-15 01:12:50,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2019-10-15 01:12:50,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1732. [2019-10-15 01:12:50,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1732 states. [2019-10-15 01:12:50,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2445 transitions. [2019-10-15 01:12:50,112 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2445 transitions. Word has length 204 [2019-10-15 01:12:50,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:50,113 INFO L462 AbstractCegarLoop]: Abstraction has 1732 states and 2445 transitions. [2019-10-15 01:12:50,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:12:50,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2445 transitions. [2019-10-15 01:12:50,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-15 01:12:50,120 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:50,120 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:50,120 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:50,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:50,121 INFO L82 PathProgramCache]: Analyzing trace with hash 489053248, now seen corresponding path program 1 times [2019-10-15 01:12:50,121 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:50,121 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129163132] [2019-10-15 01:12:50,122 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:50,122 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:50,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:50,604 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 01:12:50,605 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129163132] [2019-10-15 01:12:50,605 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:50,606 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-15 01:12:50,606 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829547721] [2019-10-15 01:12:50,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:12:50,607 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:50,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:12:50,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:12:50,608 INFO L87 Difference]: Start difference. First operand 1732 states and 2445 transitions. Second operand 14 states. [2019-10-15 01:12:50,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:50,945 INFO L93 Difference]: Finished difference Result 2859 states and 3965 transitions. [2019-10-15 01:12:50,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-15 01:12:50,945 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2019-10-15 01:12:50,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:50,959 INFO L225 Difference]: With dead ends: 2859 [2019-10-15 01:12:50,960 INFO L226 Difference]: Without dead ends: 1792 [2019-10-15 01:12:50,965 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:12:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2019-10-15 01:12:51,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1761. [2019-10-15 01:12:51,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1761 states. [2019-10-15 01:12:51,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 2476 transitions. [2019-10-15 01:12:51,082 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 2476 transitions. Word has length 204 [2019-10-15 01:12:51,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:51,083 INFO L462 AbstractCegarLoop]: Abstraction has 1761 states and 2476 transitions. [2019-10-15 01:12:51,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:12:51,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 2476 transitions. [2019-10-15 01:12:51,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-15 01:12:51,093 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:51,093 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:51,094 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:51,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:51,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1632558215, now seen corresponding path program 1 times [2019-10-15 01:12:51,094 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:51,095 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019298016] [2019-10-15 01:12:51,095 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:51,095 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:51,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:51,386 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 01:12:51,386 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019298016] [2019-10-15 01:12:51,386 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:51,387 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:12:51,387 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569095939] [2019-10-15 01:12:51,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:12:51,389 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:51,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:12:51,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:12:51,389 INFO L87 Difference]: Start difference. First operand 1761 states and 2476 transitions. Second operand 5 states. [2019-10-15 01:12:52,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:52,542 INFO L93 Difference]: Finished difference Result 4068 states and 5618 transitions. [2019-10-15 01:12:52,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:12:52,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2019-10-15 01:12:52,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:52,567 INFO L225 Difference]: With dead ends: 4068 [2019-10-15 01:12:52,567 INFO L226 Difference]: Without dead ends: 3537 [2019-10-15 01:12:52,572 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:12:52,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2019-10-15 01:12:52,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3506. [2019-10-15 01:12:52,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3506 states. [2019-10-15 01:12:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3506 states to 3506 states and 4880 transitions. [2019-10-15 01:12:52,776 INFO L78 Accepts]: Start accepts. Automaton has 3506 states and 4880 transitions. Word has length 204 [2019-10-15 01:12:52,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:52,777 INFO L462 AbstractCegarLoop]: Abstraction has 3506 states and 4880 transitions. [2019-10-15 01:12:52,777 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:12:52,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3506 states and 4880 transitions. [2019-10-15 01:12:52,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-15 01:12:52,787 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:52,787 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:52,787 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:52,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:52,788 INFO L82 PathProgramCache]: Analyzing trace with hash 677036936, now seen corresponding path program 1 times [2019-10-15 01:12:52,788 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:52,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484847192] [2019-10-15 01:12:52,789 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:52,789 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:52,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:52,975 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 01:12:52,976 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484847192] [2019-10-15 01:12:52,976 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:52,976 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:12:52,976 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874716121] [2019-10-15 01:12:52,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:12:52,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:52,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:12:52,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:12:52,978 INFO L87 Difference]: Start difference. First operand 3506 states and 4880 transitions. Second operand 7 states. [2019-10-15 01:12:54,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:54,949 INFO L93 Difference]: Finished difference Result 10740 states and 14954 transitions. [2019-10-15 01:12:54,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 01:12:54,950 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2019-10-15 01:12:54,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:55,015 INFO L225 Difference]: With dead ends: 10740 [2019-10-15 01:12:55,015 INFO L226 Difference]: Without dead ends: 8412 [2019-10-15 01:12:55,040 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:12:55,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8412 states. [2019-10-15 01:12:55,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8412 to 8390. [2019-10-15 01:12:55,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8390 states. [2019-10-15 01:12:55,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8390 states to 8390 states and 11592 transitions. [2019-10-15 01:12:55,488 INFO L78 Accepts]: Start accepts. Automaton has 8390 states and 11592 transitions. Word has length 204 [2019-10-15 01:12:55,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:55,490 INFO L462 AbstractCegarLoop]: Abstraction has 8390 states and 11592 transitions. [2019-10-15 01:12:55,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:12:55,491 INFO L276 IsEmpty]: Start isEmpty. Operand 8390 states and 11592 transitions. [2019-10-15 01:12:55,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-15 01:12:55,509 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:55,509 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:55,510 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:55,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:55,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1402076048, now seen corresponding path program 1 times [2019-10-15 01:12:55,510 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:55,511 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006547764] [2019-10-15 01:12:55,511 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:55,511 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:55,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:56,093 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 01:12:56,093 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006547764] [2019-10-15 01:12:56,093 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:56,094 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-15 01:12:56,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078059101] [2019-10-15 01:12:56,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-15 01:12:56,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:56,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-15 01:12:56,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2019-10-15 01:12:56,095 INFO L87 Difference]: Start difference. First operand 8390 states and 11592 transitions. Second operand 26 states. [2019-10-15 01:12:57,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:57,121 INFO L93 Difference]: Finished difference Result 16598 states and 23015 transitions. [2019-10-15 01:12:57,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 01:12:57,121 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 205 [2019-10-15 01:12:57,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:57,188 INFO L225 Difference]: With dead ends: 16598 [2019-10-15 01:12:57,188 INFO L226 Difference]: Without dead ends: 8912 [2019-10-15 01:12:57,221 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2019-10-15 01:12:57,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8912 states. [2019-10-15 01:12:57,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8912 to 8689. [2019-10-15 01:12:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8689 states. [2019-10-15 01:12:57,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8689 states to 8689 states and 11985 transitions. [2019-10-15 01:12:57,766 INFO L78 Accepts]: Start accepts. Automaton has 8689 states and 11985 transitions. Word has length 205 [2019-10-15 01:12:57,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:57,767 INFO L462 AbstractCegarLoop]: Abstraction has 8689 states and 11985 transitions. [2019-10-15 01:12:57,767 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-15 01:12:57,768 INFO L276 IsEmpty]: Start isEmpty. Operand 8689 states and 11985 transitions. [2019-10-15 01:12:57,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-15 01:12:57,779 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:57,779 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:57,780 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:57,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:57,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1653752068, now seen corresponding path program 1 times [2019-10-15 01:12:57,780 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:57,781 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129539544] [2019-10-15 01:12:57,781 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:57,781 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:57,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:58,027 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 01:12:58,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129539544] [2019-10-15 01:12:58,027 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:58,028 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:12:58,028 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066731832] [2019-10-15 01:12:58,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:12:58,029 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:58,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:12:58,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:12:58,029 INFO L87 Difference]: Start difference. First operand 8689 states and 11985 transitions. Second operand 10 states. [2019-10-15 01:12:58,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:58,201 INFO L93 Difference]: Finished difference Result 8754 states and 12076 transitions. [2019-10-15 01:12:58,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:12:58,202 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 209 [2019-10-15 01:12:58,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:58,255 INFO L225 Difference]: With dead ends: 8754 [2019-10-15 01:12:58,255 INFO L226 Difference]: Without dead ends: 8720 [2019-10-15 01:12:58,263 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:12:58,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8720 states. [2019-10-15 01:12:58,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8720 to 8716. [2019-10-15 01:12:58,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8716 states. [2019-10-15 01:12:58,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8716 states to 8716 states and 11977 transitions. [2019-10-15 01:12:58,747 INFO L78 Accepts]: Start accepts. Automaton has 8716 states and 11977 transitions. Word has length 209 [2019-10-15 01:12:58,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:58,748 INFO L462 AbstractCegarLoop]: Abstraction has 8716 states and 11977 transitions. [2019-10-15 01:12:58,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:12:58,748 INFO L276 IsEmpty]: Start isEmpty. Operand 8716 states and 11977 transitions. [2019-10-15 01:12:58,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-15 01:12:58,765 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:58,765 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:58,766 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:58,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:58,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1874145188, now seen corresponding path program 1 times [2019-10-15 01:12:58,767 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:58,767 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017578027] [2019-10-15 01:12:58,767 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:58,768 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:58,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:58,967 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 01:12:58,968 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017578027] [2019-10-15 01:12:58,968 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:58,968 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:12:58,968 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905567660] [2019-10-15 01:12:58,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:12:58,969 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:58,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:12:58,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:12:58,970 INFO L87 Difference]: Start difference. First operand 8716 states and 11977 transitions. Second operand 5 states. [2019-10-15 01:12:59,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:59,203 INFO L93 Difference]: Finished difference Result 15387 states and 20872 transitions. [2019-10-15 01:12:59,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:12:59,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2019-10-15 01:12:59,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:59,246 INFO L225 Difference]: With dead ends: 15387 [2019-10-15 01:12:59,246 INFO L226 Difference]: Without dead ends: 8959 [2019-10-15 01:12:59,269 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:12:59,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8959 states. [2019-10-15 01:12:59,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8959 to 8848. [2019-10-15 01:12:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8848 states. [2019-10-15 01:12:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8848 states to 8848 states and 12124 transitions. [2019-10-15 01:12:59,638 INFO L78 Accepts]: Start accepts. Automaton has 8848 states and 12124 transitions. Word has length 214 [2019-10-15 01:12:59,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:59,639 INFO L462 AbstractCegarLoop]: Abstraction has 8848 states and 12124 transitions. [2019-10-15 01:12:59,639 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:12:59,639 INFO L276 IsEmpty]: Start isEmpty. Operand 8848 states and 12124 transitions. [2019-10-15 01:12:59,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-15 01:12:59,652 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:59,653 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:59,653 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:59,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:59,653 INFO L82 PathProgramCache]: Analyzing trace with hash -604466908, now seen corresponding path program 1 times [2019-10-15 01:12:59,654 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:59,654 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087694111] [2019-10-15 01:12:59,654 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:59,654 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:59,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:59,960 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 01:12:59,960 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087694111] [2019-10-15 01:12:59,961 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:59,961 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 01:12:59,961 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064296930] [2019-10-15 01:12:59,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:12:59,962 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:59,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:12:59,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:12:59,963 INFO L87 Difference]: Start difference. First operand 8848 states and 12124 transitions. Second operand 9 states. [2019-10-15 01:13:00,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:00,334 INFO L93 Difference]: Finished difference Result 15416 states and 20789 transitions. [2019-10-15 01:13:00,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:13:00,334 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 214 [2019-10-15 01:13:00,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:00,372 INFO L225 Difference]: With dead ends: 15416 [2019-10-15 01:13:00,372 INFO L226 Difference]: Without dead ends: 8880 [2019-10-15 01:13:00,396 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:13:00,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8880 states. [2019-10-15 01:13:00,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8880 to 8814. [2019-10-15 01:13:00,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8814 states. [2019-10-15 01:13:00,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8814 states to 8814 states and 12040 transitions. [2019-10-15 01:13:00,790 INFO L78 Accepts]: Start accepts. Automaton has 8814 states and 12040 transitions. Word has length 214 [2019-10-15 01:13:00,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:00,790 INFO L462 AbstractCegarLoop]: Abstraction has 8814 states and 12040 transitions. [2019-10-15 01:13:00,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:13:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 8814 states and 12040 transitions. [2019-10-15 01:13:00,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-15 01:13:00,802 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:00,803 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:00,803 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:00,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:00,803 INFO L82 PathProgramCache]: Analyzing trace with hash -990686485, now seen corresponding path program 1 times [2019-10-15 01:13:00,804 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:00,804 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347094203] [2019-10-15 01:13:00,804 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:00,804 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:00,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:01,065 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 01:13:01,065 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347094203] [2019-10-15 01:13:01,065 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:01,066 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:13:01,066 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088683925] [2019-10-15 01:13:01,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:13:01,067 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:01,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:13:01,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:13:01,067 INFO L87 Difference]: Start difference. First operand 8814 states and 12040 transitions. Second operand 6 states. [2019-10-15 01:13:01,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:01,786 INFO L93 Difference]: Finished difference Result 24003 states and 32530 transitions. [2019-10-15 01:13:01,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:13:01,787 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 215 [2019-10-15 01:13:01,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:01,859 INFO L225 Difference]: With dead ends: 24003 [2019-10-15 01:13:01,860 INFO L226 Difference]: Without dead ends: 17705 [2019-10-15 01:13:01,889 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:13:01,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17705 states. [2019-10-15 01:13:02,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17705 to 17454. [2019-10-15 01:13:02,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17454 states. [2019-10-15 01:13:02,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17454 states to 17454 states and 23892 transitions. [2019-10-15 01:13:02,732 INFO L78 Accepts]: Start accepts. Automaton has 17454 states and 23892 transitions. Word has length 215 [2019-10-15 01:13:02,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:02,733 INFO L462 AbstractCegarLoop]: Abstraction has 17454 states and 23892 transitions. [2019-10-15 01:13:02,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:13:02,733 INFO L276 IsEmpty]: Start isEmpty. Operand 17454 states and 23892 transitions. [2019-10-15 01:13:02,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-15 01:13:02,778 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:02,778 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:02,778 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:02,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:02,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1955015576, now seen corresponding path program 1 times [2019-10-15 01:13:02,779 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:02,779 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479528618] [2019-10-15 01:13:02,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:02,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:02,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:02,925 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:13:02,925 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479528618] [2019-10-15 01:13:02,925 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:02,925 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:02,926 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215003168] [2019-10-15 01:13:02,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:02,927 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:02,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:02,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:02,927 INFO L87 Difference]: Start difference. First operand 17454 states and 23892 transitions. Second operand 3 states. [2019-10-15 01:13:03,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:03,241 INFO L93 Difference]: Finished difference Result 35785 states and 49541 transitions. [2019-10-15 01:13:03,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:03,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 250 [2019-10-15 01:13:03,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:03,328 INFO L225 Difference]: With dead ends: 35785 [2019-10-15 01:13:03,328 INFO L226 Difference]: Without dead ends: 18396 [2019-10-15 01:13:03,370 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 01:13:03,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18396 states. [2019-10-15 01:13:04,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18396 to 18390. [2019-10-15 01:13:04,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18390 states. [2019-10-15 01:13:04,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18390 states to 18390 states and 25692 transitions. [2019-10-15 01:13:04,328 INFO L78 Accepts]: Start accepts. Automaton has 18390 states and 25692 transitions. Word has length 250 [2019-10-15 01:13:04,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:04,328 INFO L462 AbstractCegarLoop]: Abstraction has 18390 states and 25692 transitions. [2019-10-15 01:13:04,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:04,329 INFO L276 IsEmpty]: Start isEmpty. Operand 18390 states and 25692 transitions. [2019-10-15 01:13:04,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-15 01:13:04,366 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:04,366 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:04,366 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:04,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:04,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1753095872, now seen corresponding path program 1 times [2019-10-15 01:13:04,367 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:04,367 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683278659] [2019-10-15 01:13:04,367 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:04,367 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:04,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:04,562 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 01:13:04,562 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683278659] [2019-10-15 01:13:04,562 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:04,563 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:13:04,563 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305123504] [2019-10-15 01:13:04,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:13:04,564 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:04,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:13:04,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:13:04,564 INFO L87 Difference]: Start difference. First operand 18390 states and 25692 transitions. Second operand 8 states.