/usr/bin/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_spec4_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:22:24,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:22:24,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:22:24,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:22:24,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:22:24,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:22:24,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:22:24,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:22:24,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:22:24,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:22:24,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:22:24,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:22:24,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:22:24,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:22:24,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:22:24,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:22:24,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:22:24,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:22:24,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:22:24,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:22:24,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:22:24,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:22:24,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:22:24,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:22:24,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:22:24,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:22:24,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:22:24,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:22:24,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:22:24,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:22:24,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:22:24,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:22:24,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:22:24,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:22:24,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:22:24,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:22:24,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:22:24,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:22:24,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:22:24,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:22:24,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:22:24,426 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 [2019-11-07 04:22:24,442 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:22:24,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:22:24,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:22:24,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:22:24,444 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:22:24,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:22:24,444 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:22:24,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:22:24,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:22:24,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:22:24,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:22:24,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:22:24,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:22:24,446 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:22:24,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:22:24,446 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:22:24,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:22:24,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:22:24,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:22:24,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:22:24,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:22:24,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:22:24,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:22:24,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:22:24,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:22:24,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:22:24,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:22:24,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:22:24,449 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 [2019-11-07 04:22:24,703 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:22:24,716 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:22:24,719 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:22:24,720 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:22:24,721 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:22:24,722 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product33.cil.c [2019-11-07 04:22:24,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cabfbdf79/41e2e913de604681b06c8fa871de5c80/FLAG904db9758 [2019-11-07 04:22:25,410 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:22:25,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product33.cil.c [2019-11-07 04:22:25,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cabfbdf79/41e2e913de604681b06c8fa871de5c80/FLAG904db9758 [2019-11-07 04:22:25,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cabfbdf79/41e2e913de604681b06c8fa871de5c80 [2019-11-07 04:22:25,635 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:22:25,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:22:25,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:22:25,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:22:25,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:22:25,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:22:25" (1/1) ... [2019-11-07 04:22:25,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3265302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:25, skipping insertion in model container [2019-11-07 04:22:25,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:22:25" (1/1) ... [2019-11-07 04:22:25,655 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:22:25,743 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:22:26,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:22:26,489 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:22:26,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:22:26,863 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:22:26,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:26 WrapperNode [2019-11-07 04:22:26,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:22:26,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:22:26,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:22:26,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:22:26,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:26" (1/1) ... [2019-11-07 04:22:26,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:26" (1/1) ... [2019-11-07 04:22:26,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:26" (1/1) ... [2019-11-07 04:22:26,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:26" (1/1) ... [2019-11-07 04:22:27,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:26" (1/1) ... [2019-11-07 04:22:27,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:26" (1/1) ... [2019-11-07 04:22:27,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:26" (1/1) ... [2019-11-07 04:22:27,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:22:27,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:22:27,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:22:27,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:22:27,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:26" (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 [2019-11-07 04:22:27,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:22:27,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:22:27,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:22:27,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:22:27,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:22:27,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:22:27,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:22:27,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:22:27,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:22:27,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:22:27,243 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 04:22:27,244 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 04:22:27,244 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 04:22:27,244 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 04:22:27,245 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 04:22:27,245 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 04:22:27,248 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 04:22:27,248 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 04:22:27,249 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:22:27,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:22:27,249 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 04:22:27,250 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 04:22:27,250 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 04:22:27,250 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 04:22:27,250 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 04:22:27,251 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 04:22:27,251 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 04:22:27,251 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 04:22:27,251 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 04:22:27,252 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 04:22:27,252 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 04:22:27,252 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:22:27,252 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:22:27,253 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:22:27,253 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:22:27,253 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:22:27,254 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 04:22:27,254 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 04:22:27,254 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 04:22:27,254 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 04:22:27,255 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 04:22:27,255 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 04:22:27,255 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 04:22:27,255 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 04:22:27,256 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 04:22:27,256 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 04:22:27,256 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 04:22:27,257 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 04:22:27,258 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 04:22:27,259 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 04:22:27,259 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 04:22:27,259 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 04:22:27,259 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 04:22:27,260 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 04:22:27,260 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 04:22:27,260 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 04:22:27,261 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 04:22:27,261 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 04:22:27,261 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 04:22:27,262 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 04:22:27,262 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 04:22:27,262 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 04:22:27,262 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 04:22:27,262 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 04:22:27,263 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 04:22:27,263 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 04:22:27,263 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 04:22:27,263 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 04:22:27,263 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 04:22:27,263 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 04:22:27,263 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 04:22:27,264 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 04:22:27,264 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 04:22:27,265 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 04:22:27,265 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 04:22:27,265 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 04:22:27,266 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 04:22:27,266 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 04:22:27,266 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 04:22:27,266 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 04:22:27,267 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 04:22:27,267 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 04:22:27,267 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 04:22:27,267 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 04:22:27,268 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 04:22:27,268 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 04:22:27,268 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 04:22:27,268 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 04:22:27,268 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-11-07 04:22:27,268 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 04:22:27,269 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 04:22:27,269 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 04:22:27,269 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 04:22:27,269 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 04:22:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 04:22:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 04:22:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-11-07 04:22:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 04:22:27,271 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 04:22:27,271 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 04:22:27,271 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 04:22:27,271 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 04:22:27,272 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 04:22:27,272 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 04:22:27,272 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 04:22:27,272 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 04:22:27,273 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 04:22:27,273 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 04:22:27,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 04:22:27,273 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 04:22:27,273 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 04:22:27,274 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 04:22:27,274 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 04:22:27,274 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 04:22:27,274 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 04:22:27,275 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 04:22:27,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 04:22:27,276 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 04:22:27,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:22:27,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:22:27,277 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:22:27,277 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:22:27,277 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:22:27,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:22:27,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:22:27,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:22:27,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:22:27,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:22:27,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:22:27,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:22:27,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:22:27,281 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:22:27,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:22:27,282 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:22:27,286 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:22:27,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:22:27,287 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:22:27,287 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:22:27,288 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:22:27,288 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 04:22:27,288 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 04:22:27,289 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 04:22:27,289 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 04:22:27,290 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 04:22:27,298 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 04:22:27,298 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 04:22:27,298 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 04:22:27,298 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 04:22:27,299 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 04:22:27,299 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:22:27,299 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:22:27,299 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:22:27,299 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 04:22:27,301 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 04:22:27,301 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 04:22:27,301 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 04:22:27,301 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 04:22:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 04:22:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 04:22:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 04:22:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 04:22:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 04:22:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 04:22:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:22:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:22:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:22:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 04:22:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 04:22:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 04:22:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 04:22:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 04:22:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 04:22:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 04:22:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 04:22:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 04:22:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 04:22:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 04:22:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 04:22:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 04:22:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 04:22:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:22:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 04:22:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 04:22:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 04:22:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 04:22:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 04:22:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 04:22:27,311 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 04:22:27,311 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 04:22:27,311 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 04:22:27,311 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 04:22:27,312 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 04:22:27,312 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 04:22:27,312 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 04:22:27,312 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 04:22:27,313 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 04:22:27,313 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 04:22:27,313 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 04:22:27,313 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 04:22:27,314 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 04:22:27,314 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 04:22:27,314 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 04:22:27,314 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 04:22:27,315 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 04:22:27,315 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 04:22:27,315 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 04:22:27,315 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 04:22:27,316 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 04:22:27,316 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 04:22:27,316 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 04:22:27,316 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 04:22:27,317 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 04:22:27,317 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 04:22:27,317 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-11-07 04:22:27,318 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 04:22:27,318 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 04:22:27,318 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 04:22:27,318 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 04:22:27,319 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 04:22:27,319 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 04:22:27,319 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 04:22:27,319 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 04:22:27,320 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 04:22:27,320 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 04:22:27,320 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 04:22:27,320 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 04:22:27,321 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 04:22:27,321 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 04:22:27,321 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 04:22:27,322 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 04:22:27,322 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 04:22:27,322 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 04:22:27,322 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 04:22:27,322 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 04:22:27,323 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 04:22:27,323 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 04:22:27,323 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 04:22:27,323 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 04:22:27,324 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-11-07 04:22:27,324 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 04:22:27,324 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 04:22:27,325 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 04:22:27,325 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 04:22:27,325 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 04:22:27,325 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 04:22:27,326 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 04:22:27,326 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 04:22:27,326 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 04:22:27,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:22:27,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:22:27,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:22:31,916 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:22:31,916 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 04:22:31,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:22:31 BoogieIcfgContainer [2019-11-07 04:22:31,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:22:31,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:22:31,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:22:31,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:22:31,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:22:25" (1/3) ... [2019-11-07 04:22:31,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2655661e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:22:31, skipping insertion in model container [2019-11-07 04:22:31,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:26" (2/3) ... [2019-11-07 04:22:31,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2655661e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:22:31, skipping insertion in model container [2019-11-07 04:22:31,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:22:31" (3/3) ... [2019-11-07 04:22:31,926 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product33.cil.c [2019-11-07 04:22:31,937 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:22:31,950 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:22:31,962 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:22:32,001 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:22:32,001 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:22:32,001 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:22:32,001 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:22:32,001 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:22:32,002 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:22:32,002 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:22:32,002 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:22:32,031 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states. [2019-11-07 04:22:32,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-07 04:22:32,048 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:32,049 INFO L410 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, 1] [2019-11-07 04:22:32,052 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:32,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:32,058 INFO L82 PathProgramCache]: Analyzing trace with hash -155292595, now seen corresponding path program 1 times [2019-11-07 04:22:32,068 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:32,068 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754493900] [2019-11-07 04:22:32,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:22:32,622 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754493900] [2019-11-07 04:22:32,623 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:32,623 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:22:32,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999405361] [2019-11-07 04:22:32,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:22:32,630 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:32,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:22:32,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:22:32,647 INFO L87 Difference]: Start difference. First operand 434 states. Second operand 2 states. [2019-11-07 04:22:32,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:32,749 INFO L93 Difference]: Finished difference Result 669 states and 793 transitions. [2019-11-07 04:22:32,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:22:32,751 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 129 [2019-11-07 04:22:32,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:32,785 INFO L225 Difference]: With dead ends: 669 [2019-11-07 04:22:32,786 INFO L226 Difference]: Without dead ends: 413 [2019-11-07 04:22:32,792 INFO L630 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 [2019-11-07 04:22:32,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2019-11-07 04:22:32,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2019-11-07 04:22:32,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2019-11-07 04:22:32,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 488 transitions. [2019-11-07 04:22:32,874 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 488 transitions. Word has length 129 [2019-11-07 04:22:32,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:32,879 INFO L462 AbstractCegarLoop]: Abstraction has 413 states and 488 transitions. [2019-11-07 04:22:32,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:22:32,880 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 488 transitions. [2019-11-07 04:22:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-07 04:22:32,888 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:32,892 INFO L410 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, 1, 1] [2019-11-07 04:22:32,893 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:32,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:32,893 INFO L82 PathProgramCache]: Analyzing trace with hash 462079243, now seen corresponding path program 1 times [2019-11-07 04:22:32,893 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:32,894 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269892014] [2019-11-07 04:22:32,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:22:33,125 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269892014] [2019-11-07 04:22:33,125 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:33,126 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:22:33,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359167570] [2019-11-07 04:22:33,128 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:22:33,128 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:33,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:22:33,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:22:33,129 INFO L87 Difference]: Start difference. First operand 413 states and 488 transitions. Second operand 3 states. [2019-11-07 04:22:33,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:33,190 INFO L93 Difference]: Finished difference Result 654 states and 764 transitions. [2019-11-07 04:22:33,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:22:33,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2019-11-07 04:22:33,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:33,201 INFO L225 Difference]: With dead ends: 654 [2019-11-07 04:22:33,201 INFO L226 Difference]: Without dead ends: 415 [2019-11-07 04:22:33,208 INFO L630 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 [2019-11-07 04:22:33,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2019-11-07 04:22:33,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2019-11-07 04:22:33,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2019-11-07 04:22:33,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 490 transitions. [2019-11-07 04:22:33,267 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 490 transitions. Word has length 130 [2019-11-07 04:22:33,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:33,268 INFO L462 AbstractCegarLoop]: Abstraction has 415 states and 490 transitions. [2019-11-07 04:22:33,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:22:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 490 transitions. [2019-11-07 04:22:33,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-07 04:22:33,273 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:33,274 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-11-07 04:22:33,274 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:33,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:33,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1596593104, now seen corresponding path program 1 times [2019-11-07 04:22:33,275 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:33,275 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87353492] [2019-11-07 04:22:33,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:22:33,507 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87353492] [2019-11-07 04:22:33,507 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:33,507 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:22:33,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052621871] [2019-11-07 04:22:33,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:22:33,510 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:33,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:22:33,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:22:33,511 INFO L87 Difference]: Start difference. First operand 415 states and 490 transitions. Second operand 3 states. [2019-11-07 04:22:33,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:33,556 INFO L93 Difference]: Finished difference Result 814 states and 990 transitions. [2019-11-07 04:22:33,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:22:33,557 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2019-11-07 04:22:33,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:33,560 INFO L225 Difference]: With dead ends: 814 [2019-11-07 04:22:33,561 INFO L226 Difference]: Without dead ends: 457 [2019-11-07 04:22:33,562 INFO L630 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 [2019-11-07 04:22:33,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2019-11-07 04:22:33,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 456. [2019-11-07 04:22:33,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2019-11-07 04:22:33,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 561 transitions. [2019-11-07 04:22:33,587 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 561 transitions. Word has length 142 [2019-11-07 04:22:33,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:33,588 INFO L462 AbstractCegarLoop]: Abstraction has 456 states and 561 transitions. [2019-11-07 04:22:33,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:22:33,588 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 561 transitions. [2019-11-07 04:22:33,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-11-07 04:22:33,593 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:33,594 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-11-07 04:22:33,594 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:33,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:33,596 INFO L82 PathProgramCache]: Analyzing trace with hash -3337637, now seen corresponding path program 1 times [2019-11-07 04:22:33,596 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:33,596 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780904588] [2019-11-07 04:22:33,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:34,368 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:22:34,368 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780904588] [2019-11-07 04:22:34,368 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:34,370 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2019-11-07 04:22:34,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469306458] [2019-11-07 04:22:34,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-07 04:22:34,372 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:34,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-07 04:22:34,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2019-11-07 04:22:34,373 INFO L87 Difference]: Start difference. First operand 456 states and 561 transitions. Second operand 21 states. [2019-11-07 04:22:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:44,972 INFO L93 Difference]: Finished difference Result 952 states and 1139 transitions. [2019-11-07 04:22:44,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-07 04:22:44,973 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 143 [2019-11-07 04:22:44,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:44,981 INFO L225 Difference]: With dead ends: 952 [2019-11-07 04:22:44,983 INFO L226 Difference]: Without dead ends: 707 [2019-11-07 04:22:44,985 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=1527, Unknown=0, NotChecked=0, Total=1722 [2019-11-07 04:22:44,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2019-11-07 04:22:45,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 700. [2019-11-07 04:22:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-11-07 04:22:45,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 847 transitions. [2019-11-07 04:22:45,039 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 847 transitions. Word has length 143 [2019-11-07 04:22:45,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:45,041 INFO L462 AbstractCegarLoop]: Abstraction has 700 states and 847 transitions. [2019-11-07 04:22:45,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-07 04:22:45,042 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 847 transitions. [2019-11-07 04:22:45,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 04:22:45,045 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:45,045 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:22:45,046 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:45,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:45,046 INFO L82 PathProgramCache]: Analyzing trace with hash -478066996, now seen corresponding path program 1 times [2019-11-07 04:22:45,046 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:45,047 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617289196] [2019-11-07 04:22:45,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:45,836 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:22:45,837 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617289196] [2019-11-07 04:22:45,838 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:45,838 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2019-11-07 04:22:45,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060466434] [2019-11-07 04:22:45,839 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-07 04:22:45,840 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:45,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-07 04:22:45,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2019-11-07 04:22:45,841 INFO L87 Difference]: Start difference. First operand 700 states and 847 transitions. Second operand 23 states. [2019-11-07 04:22:47,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:47,991 INFO L93 Difference]: Finished difference Result 778 states and 937 transitions. [2019-11-07 04:22:47,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-07 04:22:47,991 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 149 [2019-11-07 04:22:47,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:47,996 INFO L225 Difference]: With dead ends: 778 [2019-11-07 04:22:47,997 INFO L226 Difference]: Without dead ends: 742 [2019-11-07 04:22:47,999 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=213, Invalid=1949, Unknown=0, NotChecked=0, Total=2162 [2019-11-07 04:22:48,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2019-11-07 04:22:48,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 737. [2019-11-07 04:22:48,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2019-11-07 04:22:48,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 884 transitions. [2019-11-07 04:22:48,039 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 884 transitions. Word has length 149 [2019-11-07 04:22:48,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:48,040 INFO L462 AbstractCegarLoop]: Abstraction has 737 states and 884 transitions. [2019-11-07 04:22:48,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-07 04:22:48,041 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 884 transitions. [2019-11-07 04:22:48,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2019-11-07 04:22:48,046 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:48,047 INFO L410 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:22:48,047 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:48,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:48,048 INFO L82 PathProgramCache]: Analyzing trace with hash 266761706, now seen corresponding path program 1 times [2019-11-07 04:22:48,048 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:48,048 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297113246] [2019-11-07 04:22:48,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:48,694 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 04:22:48,694 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297113246] [2019-11-07 04:22:48,694 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:48,695 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2019-11-07 04:22:48,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060374289] [2019-11-07 04:22:48,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-07 04:22:48,696 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:48,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-07 04:22:48,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2019-11-07 04:22:48,697 INFO L87 Difference]: Start difference. First operand 737 states and 884 transitions. Second operand 28 states. [2019-11-07 04:23:00,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:23:00,134 INFO L93 Difference]: Finished difference Result 1492 states and 1768 transitions. [2019-11-07 04:23:00,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-11-07 04:23:00,134 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 266 [2019-11-07 04:23:00,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:23:00,142 INFO L225 Difference]: With dead ends: 1492 [2019-11-07 04:23:00,143 INFO L226 Difference]: Without dead ends: 1293 [2019-11-07 04:23:00,145 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=315, Invalid=3717, Unknown=0, NotChecked=0, Total=4032 [2019-11-07 04:23:00,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2019-11-07 04:23:00,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1222. [2019-11-07 04:23:00,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1222 states. [2019-11-07 04:23:00,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1439 transitions. [2019-11-07 04:23:00,219 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1439 transitions. Word has length 266 [2019-11-07 04:23:00,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:23:00,220 INFO L462 AbstractCegarLoop]: Abstraction has 1222 states and 1439 transitions. [2019-11-07 04:23:00,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-07 04:23:00,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1439 transitions. [2019-11-07 04:23:00,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2019-11-07 04:23:00,228 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:23:00,228 INFO L410 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:23:00,228 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:23:00,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:23:00,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1018697435, now seen corresponding path program 1 times [2019-11-07 04:23:00,229 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:23:00,229 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54976303] [2019-11-07 04:23:00,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:23:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:23:00,531 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 04:23:00,532 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54976303] [2019-11-07 04:23:00,532 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:23:00,533 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:23:00,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321131897] [2019-11-07 04:23:00,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:23:00,535 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:23:00,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:23:00,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:23:00,541 INFO L87 Difference]: Start difference. First operand 1222 states and 1439 transitions. Second operand 10 states. [2019-11-07 04:23:00,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:23:00,701 INFO L93 Difference]: Finished difference Result 1977 states and 2273 transitions. [2019-11-07 04:23:00,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 04:23:00,702 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 270 [2019-11-07 04:23:00,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:23:00,711 INFO L225 Difference]: With dead ends: 1977 [2019-11-07 04:23:00,711 INFO L226 Difference]: Without dead ends: 1262 [2019-11-07 04:23:00,713 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:23:00,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2019-11-07 04:23:00,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1230. [2019-11-07 04:23:00,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1230 states. [2019-11-07 04:23:00,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1447 transitions. [2019-11-07 04:23:00,785 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1447 transitions. Word has length 270 [2019-11-07 04:23:00,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:23:00,787 INFO L462 AbstractCegarLoop]: Abstraction has 1230 states and 1447 transitions. [2019-11-07 04:23:00,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:23:00,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1447 transitions. [2019-11-07 04:23:00,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2019-11-07 04:23:00,796 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:23:00,796 INFO L410 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:23:00,797 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:23:00,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:23:00,797 INFO L82 PathProgramCache]: Analyzing trace with hash 508182254, now seen corresponding path program 1 times [2019-11-07 04:23:00,799 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:23:00,799 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112953186] [2019-11-07 04:23:00,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:23:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:23:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 04:23:01,192 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112953186] [2019-11-07 04:23:01,192 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:23:01,192 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-07 04:23:01,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034951003] [2019-11-07 04:23:01,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 04:23:01,194 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:23:01,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 04:23:01,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-11-07 04:23:01,195 INFO L87 Difference]: Start difference. First operand 1230 states and 1447 transitions. Second operand 11 states.