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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/email_spec9_product14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:13:09,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:13:09,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:13:09,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:13:09,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:13:09,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:13:09,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:13:09,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:13:09,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:13:09,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:13:09,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:13:09,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:13:09,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:13:09,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:13:09,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:13:09,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:13:09,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:13:09,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:13:09,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:13:09,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:13:09,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:13:09,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:13:09,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:13:09,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:13:09,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:13:09,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:13:09,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:13:09,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:13:09,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:13:09,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:13:09,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:13:09,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:13:09,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:13:09,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:13:09,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:13:09,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:13:09,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:13:09,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:13:09,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:13:09,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:13:09,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:13:09,349 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:13:09,364 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:13:09,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:13:09,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:13:09,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:13:09,366 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:13:09,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:13:09,366 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:13:09,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:13:09,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:13:09,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:13:09,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:13:09,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:13:09,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:13:09,368 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:13:09,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:13:09,368 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:13:09,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:13:09,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:13:09,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:13:09,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:13:09,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:13:09,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:13:09,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:13:09,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:13:09,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:13:09,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:13:09,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:13:09,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:13:09,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:13:09,676 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:13:09,689 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:13:09,693 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:13:09,694 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:13:09,695 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:13:09,695 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product14.cil.c [2019-10-13 23:13:09,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f04a02c7/d0d15bd85b974530aa2a3ba03590334a/FLAGb54fef83e [2019-10-13 23:13:10,497 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:13:10,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product14.cil.c [2019-10-13 23:13:10,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f04a02c7/d0d15bd85b974530aa2a3ba03590334a/FLAGb54fef83e [2019-10-13 23:13:10,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f04a02c7/d0d15bd85b974530aa2a3ba03590334a [2019-10-13 23:13:10,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:13:10,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:13:10,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:13:10,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:13:10,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:13:10,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:13:10" (1/1) ... [2019-10-13 23:13:10,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2837cd28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:10, skipping insertion in model container [2019-10-13 23:13:10,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:13:10" (1/1) ... [2019-10-13 23:13:10,641 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:13:10,719 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:13:11,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:13:11,588 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:13:11,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:13:11,864 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:13:11,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:11 WrapperNode [2019-10-13 23:13:11,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:13:11,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:13:11,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:13:11,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:13:11,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:11" (1/1) ... [2019-10-13 23:13:11,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:11" (1/1) ... [2019-10-13 23:13:11,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:11" (1/1) ... [2019-10-13 23:13:11,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:11" (1/1) ... [2019-10-13 23:13:12,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:11" (1/1) ... [2019-10-13 23:13:12,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:11" (1/1) ... [2019-10-13 23:13:12,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:11" (1/1) ... [2019-10-13 23:13:12,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:13:12,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:13:12,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:13:12,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:13:12,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:13:12,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:13:12,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:13:12,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:13:12,260 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 23:13:12,260 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 23:13:12,261 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 23:13:12,262 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 23:13:12,262 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 23:13:12,262 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 23:13:12,262 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 23:13:12,263 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 23:13:12,264 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:13:12,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:13:12,264 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 23:13:12,264 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 23:13:12,264 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 23:13:12,267 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 23:13:12,267 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 23:13:12,267 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 23:13:12,267 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 23:13:12,268 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 23:13:12,268 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 23:13:12,268 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 23:13:12,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 23:13:12,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 23:13:12,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:13:12,270 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 23:13:12,270 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 23:13:12,270 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 23:13:12,270 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 23:13:12,270 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 23:13:12,272 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-13 23:13:12,272 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 23:13:12,273 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 23:13:12,273 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 23:13:12,273 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 23:13:12,273 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 23:13:12,274 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 23:13:12,274 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 23:13:12,274 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 23:13:12,275 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 23:13:12,275 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 23:13:12,275 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:13:12,275 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:13:12,276 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:13:12,276 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:13:12,276 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:13:12,277 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 23:13:12,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:13:12,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:13:12,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:13:12,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:13:12,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:13:12,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:13:12,278 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 23:13:12,279 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 23:13:12,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 23:13:12,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 23:13:12,279 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 23:13:12,280 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 23:13:12,280 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 23:13:12,281 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 23:13:12,281 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 23:13:12,281 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 23:13:12,281 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 23:13:12,282 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 23:13:12,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 23:13:12,282 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 23:13:12,282 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 23:13:12,282 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 23:13:12,283 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 23:13:12,283 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 23:13:12,283 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 23:13:12,284 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 23:13:12,284 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 23:13:12,284 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 23:13:12,285 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 23:13:12,285 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 23:13:12,286 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 23:13:12,286 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 23:13:12,286 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 23:13:12,287 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 23:13:12,287 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 23:13:12,287 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 23:13:12,288 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 23:13:12,288 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 23:13:12,289 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 23:13:12,289 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 23:13:12,289 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 23:13:12,289 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 23:13:12,289 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 23:13:12,290 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 23:13:12,290 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 23:13:12,290 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 23:13:12,290 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 23:13:12,290 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 23:13:12,291 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 23:13:12,291 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 23:13:12,291 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 23:13:12,291 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 23:13:12,291 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 23:13:12,292 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 23:13:12,292 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 23:13:12,292 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 23:13:12,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 23:13:12,293 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 23:13:12,293 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 23:13:12,293 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 23:13:12,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 23:13:12,293 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 23:13:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:13:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:13:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:13:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 23:13:12,295 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 23:13:12,295 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 23:13:12,295 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 23:13:12,296 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 23:13:12,296 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 23:13:12,296 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 23:13:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 23:13:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 23:13:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 23:13:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 23:13:12,298 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:13:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:13:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:13:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 23:13:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 23:13:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 23:13:12,300 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 23:13:12,300 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 23:13:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 23:13:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 23:13:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 23:13:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 23:13:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 23:13:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 23:13:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:13:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:13:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:13:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 23:13:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 23:13:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 23:13:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 23:13:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 23:13:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 23:13:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 23:13:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 23:13:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 23:13:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 23:13:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 23:13:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 23:13:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 23:13:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:13:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:13:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 23:13:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 23:13:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 23:13:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 23:13:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 23:13:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 23:13:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 23:13:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 23:13:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 23:13:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 23:13:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 23:13:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 23:13:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 23:13:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 23:13:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 23:13:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 23:13:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 23:13:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 23:13:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 23:13:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 23:13:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 23:13:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 23:13:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 23:13:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 23:13:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 23:13:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-13 23:13:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:13:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 23:13:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:13:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:13:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:13:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:13:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:13:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:13:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:13:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:13:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:13:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:13:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:13:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:13:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:13:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:13:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:13:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:13:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 23:13:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 23:13:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 23:13:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 23:13:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 23:13:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 23:13:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 23:13:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 23:13:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 23:13:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 23:13:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 23:13:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 23:13:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 23:13:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 23:13:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 23:13:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 23:13:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 23:13:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 23:13:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 23:13:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 23:13:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 23:13:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 23:13:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 23:13:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 23:13:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 23:13:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 23:13:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 23:13:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 23:13:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 23:13:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 23:13:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 23:13:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 23:13:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:13:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:13:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:13:16,871 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:13:16,871 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 23:13:16,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:13:16 BoogieIcfgContainer [2019-10-13 23:13:16,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:13:16,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:13:16,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:13:16,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:13:16,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:13:10" (1/3) ... [2019-10-13 23:13:16,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecec20d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:13:16, skipping insertion in model container [2019-10-13 23:13:16,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:11" (2/3) ... [2019-10-13 23:13:16,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecec20d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:13:16, skipping insertion in model container [2019-10-13 23:13:16,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:13:16" (3/3) ... [2019-10-13 23:13:16,881 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product14.cil.c [2019-10-13 23:13:16,891 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:13:16,900 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:13:16,912 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:13:16,941 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:13:16,941 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:13:16,941 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:13:16,942 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:13:16,942 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:13:16,942 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:13:16,942 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:13:16,942 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:13:16,971 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states. [2019-10-13 23:13:16,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:13:16,988 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:16,989 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 23:13:16,992 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:16,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:16,998 INFO L82 PathProgramCache]: Analyzing trace with hash -2042434371, now seen corresponding path program 1 times [2019-10-13 23:13:17,007 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:17,008 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769781775] [2019-10-13 23:13:17,008 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:17,008 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:17,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:13:17,713 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769781775] [2019-10-13 23:13:17,714 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:17,714 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:13:17,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969012537] [2019-10-13 23:13:17,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:13:17,723 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:17,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:13:17,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:13:17,739 INFO L87 Difference]: Start difference. First operand 359 states. Second operand 2 states. [2019-10-13 23:13:17,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:17,803 INFO L93 Difference]: Finished difference Result 469 states and 564 transitions. [2019-10-13 23:13:17,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:13:17,805 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 121 [2019-10-13 23:13:17,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:17,838 INFO L225 Difference]: With dead ends: 469 [2019-10-13 23:13:17,838 INFO L226 Difference]: Without dead ends: 313 [2019-10-13 23:13:17,851 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:13:17,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2019-10-13 23:13:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2019-10-13 23:13:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2019-10-13 23:13:17,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 373 transitions. [2019-10-13 23:13:17,964 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 373 transitions. Word has length 121 [2019-10-13 23:13:17,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:17,968 INFO L462 AbstractCegarLoop]: Abstraction has 313 states and 373 transitions. [2019-10-13 23:13:17,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:13:17,968 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 373 transitions. [2019-10-13 23:13:17,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 23:13:17,979 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:17,980 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 23:13:17,980 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:17,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:17,982 INFO L82 PathProgramCache]: Analyzing trace with hash -972187910, now seen corresponding path program 1 times [2019-10-13 23:13:17,982 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:17,982 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599372360] [2019-10-13 23:13:17,982 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:17,982 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:17,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:13:18,327 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599372360] [2019-10-13 23:13:18,328 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:18,328 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:18,328 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762780436] [2019-10-13 23:13:18,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:18,333 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:18,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:18,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:18,333 INFO L87 Difference]: Start difference. First operand 313 states and 373 transitions. Second operand 3 states. [2019-10-13 23:13:18,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:18,394 INFO L93 Difference]: Finished difference Result 454 states and 533 transitions. [2019-10-13 23:13:18,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:18,395 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2019-10-13 23:13:18,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:18,399 INFO L225 Difference]: With dead ends: 454 [2019-10-13 23:13:18,400 INFO L226 Difference]: Without dead ends: 315 [2019-10-13 23:13:18,401 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:18,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2019-10-13 23:13:18,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2019-10-13 23:13:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2019-10-13 23:13:18,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 375 transitions. [2019-10-13 23:13:18,436 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 375 transitions. Word has length 122 [2019-10-13 23:13:18,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:18,437 INFO L462 AbstractCegarLoop]: Abstraction has 315 states and 375 transitions. [2019-10-13 23:13:18,437 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:18,437 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 375 transitions. [2019-10-13 23:13:18,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-13 23:13:18,442 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:18,443 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 23:13:18,443 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:18,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:18,443 INFO L82 PathProgramCache]: Analyzing trace with hash 434987233, now seen corresponding path program 1 times [2019-10-13 23:13:18,444 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:18,444 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685736558] [2019-10-13 23:13:18,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:18,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:18,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:13:18,658 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685736558] [2019-10-13 23:13:18,658 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:18,659 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:18,659 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743211517] [2019-10-13 23:13:18,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:18,661 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:18,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:18,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:18,662 INFO L87 Difference]: Start difference. First operand 315 states and 375 transitions. Second operand 3 states. [2019-10-13 23:13:18,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:18,720 INFO L93 Difference]: Finished difference Result 612 states and 757 transitions. [2019-10-13 23:13:18,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:18,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2019-10-13 23:13:18,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:18,728 INFO L225 Difference]: With dead ends: 612 [2019-10-13 23:13:18,728 INFO L226 Difference]: Without dead ends: 355 [2019-10-13 23:13:18,729 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:18,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2019-10-13 23:13:18,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 354. [2019-10-13 23:13:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2019-10-13 23:13:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 443 transitions. [2019-10-13 23:13:18,753 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 443 transitions. Word has length 127 [2019-10-13 23:13:18,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:18,754 INFO L462 AbstractCegarLoop]: Abstraction has 354 states and 443 transitions. [2019-10-13 23:13:18,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:18,754 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 443 transitions. [2019-10-13 23:13:18,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-13 23:13:18,757 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:18,757 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 23:13:18,757 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:18,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:18,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1525947927, now seen corresponding path program 1 times [2019-10-13 23:13:18,758 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:18,758 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317351235] [2019-10-13 23:13:18,758 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:18,758 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:18,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:13:19,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317351235] [2019-10-13 23:13:19,012 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:19,012 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:19,012 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783887084] [2019-10-13 23:13:19,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:19,014 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:19,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:19,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:19,014 INFO L87 Difference]: Start difference. First operand 354 states and 443 transitions. Second operand 3 states. [2019-10-13 23:13:19,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:19,057 INFO L93 Difference]: Finished difference Result 545 states and 667 transitions. [2019-10-13 23:13:19,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:19,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2019-10-13 23:13:19,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:19,067 INFO L225 Difference]: With dead ends: 545 [2019-10-13 23:13:19,067 INFO L226 Difference]: Without dead ends: 418 [2019-10-13 23:13:19,069 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:19,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2019-10-13 23:13:19,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 417. [2019-10-13 23:13:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2019-10-13 23:13:19,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 516 transitions. [2019-10-13 23:13:19,116 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 516 transitions. Word has length 128 [2019-10-13 23:13:19,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:19,118 INFO L462 AbstractCegarLoop]: Abstraction has 417 states and 516 transitions. [2019-10-13 23:13:19,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:19,119 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 516 transitions. [2019-10-13 23:13:19,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-10-13 23:13:19,130 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:19,131 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:19,131 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:19,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:19,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1570090250, now seen corresponding path program 1 times [2019-10-13 23:13:19,132 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:19,132 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173678456] [2019-10-13 23:13:19,133 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:19,133 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:19,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:19,510 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173678456] [2019-10-13 23:13:19,510 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:19,510 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:13:19,511 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94785612] [2019-10-13 23:13:19,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:13:19,512 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:19,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:13:19,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:13:19,513 INFO L87 Difference]: Start difference. First operand 417 states and 516 transitions. Second operand 12 states. [2019-10-13 23:13:21,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:21,484 INFO L93 Difference]: Finished difference Result 939 states and 1153 transitions. [2019-10-13 23:13:21,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:13:21,485 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 211 [2019-10-13 23:13:21,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:21,492 INFO L225 Difference]: With dead ends: 939 [2019-10-13 23:13:21,492 INFO L226 Difference]: Without dead ends: 754 [2019-10-13 23:13:21,494 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2019-10-13 23:13:21,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2019-10-13 23:13:21,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 745. [2019-10-13 23:13:21,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2019-10-13 23:13:21,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 932 transitions. [2019-10-13 23:13:21,545 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 932 transitions. Word has length 211 [2019-10-13 23:13:21,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:21,545 INFO L462 AbstractCegarLoop]: Abstraction has 745 states and 932 transitions. [2019-10-13 23:13:21,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:13:21,546 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 932 transitions. [2019-10-13 23:13:21,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-10-13 23:13:21,551 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:21,551 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:21,552 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:21,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:21,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1016670575, now seen corresponding path program 1 times [2019-10-13 23:13:21,552 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:21,553 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167643432] [2019-10-13 23:13:21,553 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:21,553 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:21,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 23:13:21,845 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167643432] [2019-10-13 23:13:21,846 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:21,846 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:13:21,846 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548382581] [2019-10-13 23:13:21,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:13:21,847 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:21,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:13:21,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:13:21,848 INFO L87 Difference]: Start difference. First operand 745 states and 932 transitions. Second operand 10 states. [2019-10-13 23:13:23,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:23,156 INFO L93 Difference]: Finished difference Result 909 states and 1106 transitions. [2019-10-13 23:13:23,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:13:23,157 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 213 [2019-10-13 23:13:23,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:23,161 INFO L225 Difference]: With dead ends: 909 [2019-10-13 23:13:23,161 INFO L226 Difference]: Without dead ends: 512 [2019-10-13 23:13:23,163 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:13:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2019-10-13 23:13:23,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 510. [2019-10-13 23:13:23,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2019-10-13 23:13:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 651 transitions. [2019-10-13 23:13:23,195 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 651 transitions. Word has length 213 [2019-10-13 23:13:23,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:23,196 INFO L462 AbstractCegarLoop]: Abstraction has 510 states and 651 transitions. [2019-10-13 23:13:23,196 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:13:23,196 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 651 transitions. [2019-10-13 23:13:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-13 23:13:23,201 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:23,201 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:23,202 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:23,202 INFO L82 PathProgramCache]: Analyzing trace with hash -746900742, now seen corresponding path program 1 times [2019-10-13 23:13:23,203 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:23,203 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362837286] [2019-10-13 23:13:23,203 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:23,203 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:23,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:23,398 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362837286] [2019-10-13 23:13:23,398 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:23,398 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:23,400 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321977023] [2019-10-13 23:13:23,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:23,402 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:23,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:23,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:23,403 INFO L87 Difference]: Start difference. First operand 510 states and 651 transitions. Second operand 3 states. [2019-10-13 23:13:23,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:23,449 INFO L93 Difference]: Finished difference Result 1119 states and 1506 transitions. [2019-10-13 23:13:23,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:23,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2019-10-13 23:13:23,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:23,455 INFO L225 Difference]: With dead ends: 1119 [2019-10-13 23:13:23,455 INFO L226 Difference]: Without dead ends: 665 [2019-10-13 23:13:23,458 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2019-10-13 23:13:23,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 664. [2019-10-13 23:13:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2019-10-13 23:13:23,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 911 transitions. [2019-10-13 23:13:23,542 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 911 transitions. Word has length 233 [2019-10-13 23:13:23,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:23,542 INFO L462 AbstractCegarLoop]: Abstraction has 664 states and 911 transitions. [2019-10-13 23:13:23,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:23,543 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 911 transitions. [2019-10-13 23:13:23,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-10-13 23:13:23,548 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:23,548 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:23,549 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:23,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:23,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1647493163, now seen corresponding path program 1 times [2019-10-13 23:13:23,549 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:23,549 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204758005] [2019-10-13 23:13:23,550 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:23,550 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:23,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 23:13:23,744 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204758005] [2019-10-13 23:13:23,744 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:23,745 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:23,745 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337273203] [2019-10-13 23:13:23,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:23,746 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:23,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:23,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:23,746 INFO L87 Difference]: Start difference. First operand 664 states and 911 transitions. Second operand 3 states. [2019-10-13 23:13:23,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:23,811 INFO L93 Difference]: Finished difference Result 1561 states and 2254 transitions. [2019-10-13 23:13:23,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:23,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2019-10-13 23:13:23,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:23,820 INFO L225 Difference]: With dead ends: 1561 [2019-10-13 23:13:23,820 INFO L226 Difference]: Without dead ends: 953 [2019-10-13 23:13:23,824 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:23,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2019-10-13 23:13:23,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 952. [2019-10-13 23:13:23,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2019-10-13 23:13:23,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1395 transitions. [2019-10-13 23:13:23,895 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1395 transitions. Word has length 239 [2019-10-13 23:13:23,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:23,896 INFO L462 AbstractCegarLoop]: Abstraction has 952 states and 1395 transitions. [2019-10-13 23:13:23,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:23,897 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1395 transitions. [2019-10-13 23:13:23,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-13 23:13:23,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:23,909 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:23,910 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:23,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:23,910 INFO L82 PathProgramCache]: Analyzing trace with hash -470584100, now seen corresponding path program 1 times [2019-10-13 23:13:23,911 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:23,911 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731475759] [2019-10-13 23:13:23,911 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:23,912 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:23,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:24,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731475759] [2019-10-13 23:13:24,092 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:24,092 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:24,093 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929325326] [2019-10-13 23:13:24,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:24,094 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:24,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:24,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:24,094 INFO L87 Difference]: Start difference. First operand 952 states and 1395 transitions. Second operand 3 states. [2019-10-13 23:13:24,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:24,232 INFO L93 Difference]: Finished difference Result 2401 states and 3666 transitions. [2019-10-13 23:13:24,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:24,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2019-10-13 23:13:24,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:24,245 INFO L225 Difference]: With dead ends: 2401 [2019-10-13 23:13:24,245 INFO L226 Difference]: Without dead ends: 1505 [2019-10-13 23:13:24,249 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:24,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2019-10-13 23:13:24,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1504. [2019-10-13 23:13:24,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1504 states. [2019-10-13 23:13:24,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 2315 transitions. [2019-10-13 23:13:24,356 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 2315 transitions. Word has length 235 [2019-10-13 23:13:24,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:24,357 INFO L462 AbstractCegarLoop]: Abstraction has 1504 states and 2315 transitions. [2019-10-13 23:13:24,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:24,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 2315 transitions. [2019-10-13 23:13:24,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-13 23:13:24,367 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:24,368 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:24,368 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:24,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:24,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1650430462, now seen corresponding path program 1 times [2019-10-13 23:13:24,369 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:24,369 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798139891] [2019-10-13 23:13:24,369 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:24,369 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:24,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:24,535 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:24,536 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798139891] [2019-10-13 23:13:24,536 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:24,537 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:24,537 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093676269] [2019-10-13 23:13:24,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:24,538 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:24,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:24,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:24,539 INFO L87 Difference]: Start difference. First operand 1504 states and 2315 transitions. Second operand 3 states. [2019-10-13 23:13:24,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:24,699 INFO L93 Difference]: Finished difference Result 4009 states and 6346 transitions. [2019-10-13 23:13:24,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:24,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2019-10-13 23:13:24,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:24,718 INFO L225 Difference]: With dead ends: 4009 [2019-10-13 23:13:24,718 INFO L226 Difference]: Without dead ends: 2561 [2019-10-13 23:13:24,733 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:24,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2019-10-13 23:13:24,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2560. [2019-10-13 23:13:24,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2560 states. [2019-10-13 23:13:24,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 4059 transitions. [2019-10-13 23:13:24,938 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 4059 transitions. Word has length 236 [2019-10-13 23:13:24,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:24,940 INFO L462 AbstractCegarLoop]: Abstraction has 2560 states and 4059 transitions. [2019-10-13 23:13:24,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:24,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 4059 transitions. [2019-10-13 23:13:24,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-13 23:13:24,957 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:24,957 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:24,958 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:24,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:24,958 INFO L82 PathProgramCache]: Analyzing trace with hash 783001404, now seen corresponding path program 1 times [2019-10-13 23:13:24,959 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:24,959 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8301587] [2019-10-13 23:13:24,959 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:24,959 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:24,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:25,232 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:25,232 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8301587] [2019-10-13 23:13:25,232 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:25,233 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:25,233 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546802059] [2019-10-13 23:13:25,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:25,234 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:25,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:25,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:25,234 INFO L87 Difference]: Start difference. First operand 2560 states and 4059 transitions. Second operand 3 states. [2019-10-13 23:13:25,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:25,457 INFO L93 Difference]: Finished difference Result 7209 states and 11610 transitions. [2019-10-13 23:13:25,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:25,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2019-10-13 23:13:25,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:25,488 INFO L225 Difference]: With dead ends: 7209 [2019-10-13 23:13:25,488 INFO L226 Difference]: Without dead ends: 4705 [2019-10-13 23:13:25,499 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:25,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4705 states. [2019-10-13 23:13:25,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4705 to 4704. [2019-10-13 23:13:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4704 states. [2019-10-13 23:13:25,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4704 states to 4704 states and 7547 transitions. [2019-10-13 23:13:25,804 INFO L78 Accepts]: Start accepts. Automaton has 4704 states and 7547 transitions. Word has length 237 [2019-10-13 23:13:25,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:25,804 INFO L462 AbstractCegarLoop]: Abstraction has 4704 states and 7547 transitions. [2019-10-13 23:13:25,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:25,805 INFO L276 IsEmpty]: Start isEmpty. Operand 4704 states and 7547 transitions. [2019-10-13 23:13:25,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2019-10-13 23:13:25,834 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:25,835 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:25,835 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:25,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:25,836 INFO L82 PathProgramCache]: Analyzing trace with hash 356372203, now seen corresponding path program 1 times [2019-10-13 23:13:25,836 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:25,836 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156207826] [2019-10-13 23:13:25,836 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:25,837 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:25,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 23:13:26,078 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156207826] [2019-10-13 23:13:26,078 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:26,078 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:26,078 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243348900] [2019-10-13 23:13:26,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:26,079 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:26,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:26,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:26,080 INFO L87 Difference]: Start difference. First operand 4704 states and 7547 transitions. Second operand 3 states. [2019-10-13 23:13:26,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:26,405 INFO L93 Difference]: Finished difference Result 13321 states and 21562 transitions. [2019-10-13 23:13:26,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:26,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 243 [2019-10-13 23:13:26,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:26,467 INFO L225 Difference]: With dead ends: 13321 [2019-10-13 23:13:26,468 INFO L226 Difference]: Without dead ends: 8673 [2019-10-13 23:13:26,489 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:26,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8673 states. [2019-10-13 23:13:26,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8673 to 8672. [2019-10-13 23:13:26,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8672 states. [2019-10-13 23:13:27,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 13947 transitions. [2019-10-13 23:13:27,018 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 13947 transitions. Word has length 243 [2019-10-13 23:13:27,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:27,019 INFO L462 AbstractCegarLoop]: Abstraction has 8672 states and 13947 transitions. [2019-10-13 23:13:27,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:27,019 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 13947 transitions. [2019-10-13 23:13:27,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-10-13 23:13:27,095 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:27,096 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:27,096 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:27,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:27,097 INFO L82 PathProgramCache]: Analyzing trace with hash -2121107531, now seen corresponding path program 1 times [2019-10-13 23:13:27,097 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:27,097 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567509342] [2019-10-13 23:13:27,098 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:27,098 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:27,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-10-13 23:13:27,793 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567509342] [2019-10-13 23:13:27,794 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303370064] [2019-10-13 23:13:27,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:13:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:28,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 3182 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 23:13:28,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:13:28,728 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 23:13:28,729 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:13:28,950 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-10-13 23:13:29,248 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:29,249 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [338517118] [2019-10-13 23:13:29,290 INFO L162 IcfgInterpreter]: Started Sifa with 190 locations of interest [2019-10-13 23:13:29,290 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:13:29,298 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:13:29,307 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:13:29,308 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs