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_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:18:04,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:18:04,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:18:04,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:18:04,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:18:04,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:18:04,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:18:04,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:18:04,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:18:04,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:18:04,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:18:04,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:18:04,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:18:04,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:18:04,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:18:04,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:18:04,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:18:04,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:18:04,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:18:04,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:18:04,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:18:04,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:18:04,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:18:04,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:18:04,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:18:04,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:18:04,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:18:04,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:18:04,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:18:04,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:18:04,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:18:04,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:18:04,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:18:04,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:18:04,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:18:04,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:18:04,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:18:04,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:18:04,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:18:04,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:18:04,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:18:04,650 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:18:04,666 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:18:04,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:18:04,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:18:04,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:18:04,668 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:18:04,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:18:04,668 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:18:04,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:18:04,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:18:04,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:18:04,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:18:04,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:18:04,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:18:04,673 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:18:04,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:18:04,673 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:18:04,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:18:04,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:18:04,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:18:04,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:18:04,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:18:04,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:18:04,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:18:04,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:18:04,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:18:04,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:18:04,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:18:04,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:18:04,676 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 [2019-10-15 03:18:04,976 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:18:05,000 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:18:05,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:18:05,005 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:18:05,006 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:18:05,006 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product26.cil.c [2019-10-15 03:18:05,081 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b83e84c67/7525ddd3c4ad4b099c9b480fa575dc8d/FLAG50519835a [2019-10-15 03:18:05,744 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:18:05,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product26.cil.c [2019-10-15 03:18:05,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b83e84c67/7525ddd3c4ad4b099c9b480fa575dc8d/FLAG50519835a [2019-10-15 03:18:05,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b83e84c67/7525ddd3c4ad4b099c9b480fa575dc8d [2019-10-15 03:18:05,929 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:18:05,930 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:18:05,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:18:05,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:18:05,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:18:05,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:18:05" (1/1) ... [2019-10-15 03:18:05,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc444e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:18:05, skipping insertion in model container [2019-10-15 03:18:05,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:18:05" (1/1) ... [2019-10-15 03:18:05,947 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:18:06,012 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:18:06,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:18:06,793 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:18:06,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:18:07,082 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:18:07,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:18:07 WrapperNode [2019-10-15 03:18:07,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:18:07,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:18:07,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:18:07,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:18:07,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:18:07" (1/1) ... [2019-10-15 03:18:07,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:18:07" (1/1) ... [2019-10-15 03:18:07,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:18:07" (1/1) ... [2019-10-15 03:18:07,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:18:07" (1/1) ... [2019-10-15 03:18:07,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:18:07" (1/1) ... [2019-10-15 03:18:07,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:18:07" (1/1) ... [2019-10-15 03:18:07,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:18:07" (1/1) ... [2019-10-15 03:18:07,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:18:07,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:18:07,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:18:07,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:18:07,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:18:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:18:07,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:18:07,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:18:07,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:18:07,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:18:07,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:18:07,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:18:07,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:18:07,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:18:07,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:18:07,373 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 03:18:07,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 03:18:07,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 03:18:07,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 03:18:07,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 03:18:07,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 03:18:07,375 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 03:18:07,375 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 03:18:07,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:18:07,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:18:07,376 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 03:18:07,376 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 03:18:07,377 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 03:18:07,377 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 03:18:07,377 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 03:18:07,377 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 03:18:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 03:18:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 03:18:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 03:18:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 03:18:07,379 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 03:18:07,379 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 03:18:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:18:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 03:18:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 03:18:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 03:18:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 03:18:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 03:18:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 03:18:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:18:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:18:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:18:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:18:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:18:07,383 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 03:18:07,383 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 03:18:07,383 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 03:18:07,383 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 03:18:07,383 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 03:18:07,383 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 03:18:07,384 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-15 03:18:07,384 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 03:18:07,384 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 03:18:07,384 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 03:18:07,384 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 03:18:07,384 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 03:18:07,385 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 03:18:07,385 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 03:18:07,385 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 03:18:07,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 03:18:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 03:18:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 03:18:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 03:18:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 03:18:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-15 03:18:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-15 03:18:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 03:18:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 03:18:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 03:18:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 03:18:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 03:18:07,388 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 03:18:07,388 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 03:18:07,388 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 03:18:07,389 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 03:18:07,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 03:18:07,389 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 03:18:07,390 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 03:18:07,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 03:18:07,390 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 03:18:07,390 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 03:18:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 03:18:07,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 03:18:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 03:18:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 03:18:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 03:18:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 03:18:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 03:18:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 03:18:07,395 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 03:18:07,396 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 03:18:07,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 03:18:07,396 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 03:18:07,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 03:18:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 03:18:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 03:18:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 03:18:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 03:18:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 03:18:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 03:18:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 03:18:07,398 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 03:18:07,398 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 03:18:07,398 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 03:18:07,398 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 03:18:07,398 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 03:18:07,398 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 03:18:07,398 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 03:18:07,399 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 03:18:07,399 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 03:18:07,399 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 03:18:07,399 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 03:18:07,399 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 03:18:07,399 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 03:18:07,399 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 03:18:07,400 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 03:18:07,400 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 03:18:07,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:18:07,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:18:07,401 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:18:07,401 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:18:07,401 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:18:07,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:18:07,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:18:07,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:18:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:18:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:18:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:18:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:18:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:18:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:18:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:18:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:18:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:18:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:18:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:18:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:18:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 03:18:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 03:18:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 03:18:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 03:18:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 03:18:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 03:18:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 03:18:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 03:18:07,418 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 03:18:07,418 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 03:18:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 03:18:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 03:18:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 03:18:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:18:07,420 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:18:07,420 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:18:07,420 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 03:18:07,420 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 03:18:07,421 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 03:18:07,421 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 03:18:07,421 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 03:18:07,421 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 03:18:07,421 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 03:18:07,421 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 03:18:07,421 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 03:18:07,421 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 03:18:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 03:18:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:18:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:18:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:18:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 03:18:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 03:18:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 03:18:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 03:18:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 03:18:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 03:18:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 03:18:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 03:18:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 03:18:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 03:18:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 03:18:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 03:18:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 03:18:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 03:18:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 03:18:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 03:18:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 03:18:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 03:18:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 03:18:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 03:18:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 03:18:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 03:18:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 03:18:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 03:18:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 03:18:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 03:18:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 03:18:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 03:18:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:18:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:18:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 03:18:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 03:18:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 03:18:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 03:18:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 03:18:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 03:18:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 03:18:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 03:18:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 03:18:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 03:18:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 03:18:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 03:18:07,429 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 03:18:07,429 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 03:18:07,429 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 03:18:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 03:18:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 03:18:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 03:18:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 03:18:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-15 03:18:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 03:18:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 03:18:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 03:18:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-15 03:18:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 03:18:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-15 03:18:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 03:18:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 03:18:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 03:18:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 03:18:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 03:18:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 03:18:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 03:18:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 03:18:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 03:18:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 03:18:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 03:18:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 03:18:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 03:18:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 03:18:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 03:18:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 03:18:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 03:18:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 03:18:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 03:18:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 03:18:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 03:18:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 03:18:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:18:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:18:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:18:11,953 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:18:11,954 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 03:18:11,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:18:11 BoogieIcfgContainer [2019-10-15 03:18:11,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:18:11,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:18:11,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:18:11,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:18:11,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:18:05" (1/3) ... [2019-10-15 03:18:11,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d031ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:18:11, skipping insertion in model container [2019-10-15 03:18:11,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:18:07" (2/3) ... [2019-10-15 03:18:11,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d031ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:18:11, skipping insertion in model container [2019-10-15 03:18:11,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:18:11" (3/3) ... [2019-10-15 03:18:11,965 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product26.cil.c [2019-10-15 03:18:11,976 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:18:11,986 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:18:11,999 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:18:12,029 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:18:12,030 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:18:12,030 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:18:12,030 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:18:12,030 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:18:12,030 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:18:12,030 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:18:12,031 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:18:12,061 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states. [2019-10-15 03:18:12,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 03:18:12,080 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:18:12,135 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] [2019-10-15 03:18:12,137 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:18:12,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:18:12,144 INFO L82 PathProgramCache]: Analyzing trace with hash 2007486757, now seen corresponding path program 1 times [2019-10-15 03:18:12,152 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:18:12,152 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451498707] [2019-10-15 03:18:12,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:12,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:12,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:18:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:18:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:18:12,765 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451498707] [2019-10-15 03:18:12,766 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:18:12,766 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:18:12,767 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583413039] [2019-10-15 03:18:12,774 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:18:12,775 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:18:12,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:18:12,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:18:12,793 INFO L87 Difference]: Start difference. First operand 420 states. Second operand 2 states. [2019-10-15 03:18:12,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:18:12,876 INFO L93 Difference]: Finished difference Result 615 states and 732 transitions. [2019-10-15 03:18:12,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:18:12,878 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 121 [2019-10-15 03:18:12,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:18:12,898 INFO L225 Difference]: With dead ends: 615 [2019-10-15 03:18:12,898 INFO L226 Difference]: Without dead ends: 393 [2019-10-15 03:18:12,905 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:18:12,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2019-10-15 03:18:12,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2019-10-15 03:18:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2019-10-15 03:18:12,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 464 transitions. [2019-10-15 03:18:12,998 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 464 transitions. Word has length 121 [2019-10-15 03:18:13,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:18:13,002 INFO L462 AbstractCegarLoop]: Abstraction has 393 states and 464 transitions. [2019-10-15 03:18:13,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:18:13,002 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 464 transitions. [2019-10-15 03:18:13,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-15 03:18:13,016 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:18:13,016 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] [2019-10-15 03:18:13,017 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:18:13,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:18:13,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1428415782, now seen corresponding path program 1 times [2019-10-15 03:18:13,018 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:18:13,018 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606058436] [2019-10-15 03:18:13,018 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:13,018 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:13,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:18:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:18:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:18:13,314 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606058436] [2019-10-15 03:18:13,315 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:18:13,315 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:18:13,315 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633706101] [2019-10-15 03:18:13,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:18:13,317 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:18:13,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:18:13,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:18:13,318 INFO L87 Difference]: Start difference. First operand 393 states and 464 transitions. Second operand 3 states. [2019-10-15 03:18:13,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:18:13,380 INFO L93 Difference]: Finished difference Result 600 states and 701 transitions. [2019-10-15 03:18:13,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:18:13,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2019-10-15 03:18:13,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:18:13,394 INFO L225 Difference]: With dead ends: 600 [2019-10-15 03:18:13,394 INFO L226 Difference]: Without dead ends: 395 [2019-10-15 03:18:13,397 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:18:13,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2019-10-15 03:18:13,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2019-10-15 03:18:13,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2019-10-15 03:18:13,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 466 transitions. [2019-10-15 03:18:13,462 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 466 transitions. Word has length 122 [2019-10-15 03:18:13,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:18:13,465 INFO L462 AbstractCegarLoop]: Abstraction has 395 states and 466 transitions. [2019-10-15 03:18:13,465 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:18:13,465 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 466 transitions. [2019-10-15 03:18:13,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-15 03:18:13,470 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:18:13,470 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, 1, 1, 1, 1, 1, 1] [2019-10-15 03:18:13,470 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:18:13,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:18:13,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2110274793, now seen corresponding path program 1 times [2019-10-15 03:18:13,471 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:18:13,472 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327426354] [2019-10-15 03:18:13,472 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:13,472 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:13,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:18:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:18:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:18:13,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327426354] [2019-10-15 03:18:13,775 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:18:13,775 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:18:13,775 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692704467] [2019-10-15 03:18:13,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:18:13,778 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:18:13,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:18:13,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:18:13,778 INFO L87 Difference]: Start difference. First operand 395 states and 466 transitions. Second operand 3 states. [2019-10-15 03:18:13,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:18:13,825 INFO L93 Difference]: Finished difference Result 776 states and 945 transitions. [2019-10-15 03:18:13,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:18:13,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2019-10-15 03:18:13,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:18:13,831 INFO L225 Difference]: With dead ends: 776 [2019-10-15 03:18:13,831 INFO L226 Difference]: Without dead ends: 439 [2019-10-15 03:18:13,834 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:18:13,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2019-10-15 03:18:13,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 438. [2019-10-15 03:18:13,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2019-10-15 03:18:13,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 540 transitions. [2019-10-15 03:18:13,873 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 540 transitions. Word has length 134 [2019-10-15 03:18:13,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:18:13,874 INFO L462 AbstractCegarLoop]: Abstraction has 438 states and 540 transitions. [2019-10-15 03:18:13,874 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:18:13,874 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 540 transitions. [2019-10-15 03:18:13,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 03:18:13,886 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:18:13,886 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:18:13,887 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:18:13,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:18:13,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1667295687, now seen corresponding path program 1 times [2019-10-15 03:18:13,887 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:18:13,887 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84083238] [2019-10-15 03:18:13,888 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:13,888 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:13,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:18:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:18:14,157 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:18:14,158 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84083238] [2019-10-15 03:18:14,158 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:18:14,158 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:18:14,158 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546139124] [2019-10-15 03:18:14,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:18:14,159 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:18:14,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:18:14,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:18:14,160 INFO L87 Difference]: Start difference. First operand 438 states and 540 transitions. Second operand 3 states. [2019-10-15 03:18:14,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:18:14,205 INFO L93 Difference]: Finished difference Result 695 states and 841 transitions. [2019-10-15 03:18:14,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:18:14,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2019-10-15 03:18:14,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:18:14,214 INFO L225 Difference]: With dead ends: 695 [2019-10-15 03:18:14,214 INFO L226 Difference]: Without dead ends: 502 [2019-10-15 03:18:14,216 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 [2019-10-15 03:18:14,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2019-10-15 03:18:14,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 501. [2019-10-15 03:18:14,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2019-10-15 03:18:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 613 transitions. [2019-10-15 03:18:14,268 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 613 transitions. Word has length 135 [2019-10-15 03:18:14,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:18:14,270 INFO L462 AbstractCegarLoop]: Abstraction has 501 states and 613 transitions. [2019-10-15 03:18:14,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:18:14,270 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 613 transitions. [2019-10-15 03:18:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-15 03:18:14,277 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:18:14,278 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:18:14,278 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:18:14,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:18:14,279 INFO L82 PathProgramCache]: Analyzing trace with hash 505031102, now seen corresponding path program 1 times [2019-10-15 03:18:14,279 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:18:14,280 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198425729] [2019-10-15 03:18:14,280 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:14,280 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:14,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:18:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:18:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 03:18:14,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198425729] [2019-10-15 03:18:14,756 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:18:14,756 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:18:14,756 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688954390] [2019-10-15 03:18:14,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:18:14,757 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:18:14,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:18:14,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:18:14,758 INFO L87 Difference]: Start difference. First operand 501 states and 613 transitions. Second operand 12 states. [2019-10-15 03:18:17,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:18:17,466 INFO L93 Difference]: Finished difference Result 1173 states and 1424 transitions. [2019-10-15 03:18:17,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:18:17,466 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 236 [2019-10-15 03:18:17,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:18:17,473 INFO L225 Difference]: With dead ends: 1173 [2019-10-15 03:18:17,474 INFO L226 Difference]: Without dead ends: 922 [2019-10-15 03:18:17,475 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 [2019-10-15 03:18:17,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2019-10-15 03:18:17,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 913. [2019-10-15 03:18:17,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2019-10-15 03:18:17,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1126 transitions. [2019-10-15 03:18:17,532 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1126 transitions. Word has length 236 [2019-10-15 03:18:17,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:18:17,532 INFO L462 AbstractCegarLoop]: Abstraction has 913 states and 1126 transitions. [2019-10-15 03:18:17,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:18:17,533 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1126 transitions. [2019-10-15 03:18:17,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2019-10-15 03:18:17,539 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:18:17,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:18:17,540 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:18:17,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:18:17,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1103444841, now seen corresponding path program 1 times [2019-10-15 03:18:17,540 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:18:17,541 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728682838] [2019-10-15 03:18:17,541 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:17,541 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:17,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:18:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:18:17,776 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 03:18:17,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728682838] [2019-10-15 03:18:17,776 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:18:17,777 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:18:17,777 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861063019] [2019-10-15 03:18:17,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:18:17,778 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:18:17,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:18:17,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:18:17,778 INFO L87 Difference]: Start difference. First operand 913 states and 1126 transitions. Second operand 3 states. [2019-10-15 03:18:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:18:17,840 INFO L93 Difference]: Finished difference Result 1932 states and 2473 transitions. [2019-10-15 03:18:17,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:18:17,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2019-10-15 03:18:17,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:18:17,848 INFO L225 Difference]: With dead ends: 1932 [2019-10-15 03:18:17,848 INFO L226 Difference]: Without dead ends: 1077 [2019-10-15 03:18:17,852 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:18:17,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2019-10-15 03:18:17,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1075. [2019-10-15 03:18:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1075 states. [2019-10-15 03:18:17,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1404 transitions. [2019-10-15 03:18:17,949 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1404 transitions. Word has length 251 [2019-10-15 03:18:17,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:18:17,949 INFO L462 AbstractCegarLoop]: Abstraction has 1075 states and 1404 transitions. [2019-10-15 03:18:17,950 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:18:17,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1404 transitions. [2019-10-15 03:18:17,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2019-10-15 03:18:17,962 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:18:17,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:18:17,963 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:18:17,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:18:17,964 INFO L82 PathProgramCache]: Analyzing trace with hash -351024519, now seen corresponding path program 1 times [2019-10-15 03:18:17,964 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:18:17,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848258185] [2019-10-15 03:18:17,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:17,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:17,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:18:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:18:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 03:18:18,340 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848258185] [2019-10-15 03:18:18,341 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:18:18,341 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:18:18,341 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682211307] [2019-10-15 03:18:18,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:18:18,342 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:18:18,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:18:18,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:18:18,343 INFO L87 Difference]: Start difference. First operand 1075 states and 1404 transitions. Second operand 3 states. [2019-10-15 03:18:18,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:18:18,441 INFO L93 Difference]: Finished difference Result 2406 states and 3287 transitions. [2019-10-15 03:18:18,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:18:18,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 252 [2019-10-15 03:18:18,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:18:18,452 INFO L225 Difference]: With dead ends: 2406 [2019-10-15 03:18:18,452 INFO L226 Difference]: Without dead ends: 1389 [2019-10-15 03:18:18,459 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:18:18,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2019-10-15 03:18:18,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1387. [2019-10-15 03:18:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1387 states. [2019-10-15 03:18:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1936 transitions. [2019-10-15 03:18:18,549 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1936 transitions. Word has length 252 [2019-10-15 03:18:18,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:18:18,552 INFO L462 AbstractCegarLoop]: Abstraction has 1387 states and 1936 transitions. [2019-10-15 03:18:18,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:18:18,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1936 transitions. [2019-10-15 03:18:18,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2019-10-15 03:18:18,561 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:18:18,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:18:18,563 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:18:18,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:18:18,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1639900407, now seen corresponding path program 1 times [2019-10-15 03:18:18,564 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:18:18,564 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826138191] [2019-10-15 03:18:18,564 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:18,564 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:18,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:18:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:18:18,789 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 03:18:18,790 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826138191] [2019-10-15 03:18:18,790 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:18:18,791 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:18:18,791 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554376484] [2019-10-15 03:18:18,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:18:18,793 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:18:18,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:18:18,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:18:18,794 INFO L87 Difference]: Start difference. First operand 1387 states and 1936 transitions. Second operand 3 states. [2019-10-15 03:18:18,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:18:18,919 INFO L93 Difference]: Finished difference Result 3318 states and 4843 transitions. [2019-10-15 03:18:18,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:18:18,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 253 [2019-10-15 03:18:18,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:18:18,934 INFO L225 Difference]: With dead ends: 3318 [2019-10-15 03:18:18,934 INFO L226 Difference]: Without dead ends: 1989 [2019-10-15 03:18:18,940 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:18:18,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2019-10-15 03:18:19,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1987. [2019-10-15 03:18:19,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1987 states. [2019-10-15 03:18:19,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2952 transitions. [2019-10-15 03:18:19,087 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2952 transitions. Word has length 253 [2019-10-15 03:18:19,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:18:19,088 INFO L462 AbstractCegarLoop]: Abstraction has 1987 states and 2952 transitions. [2019-10-15 03:18:19,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:18:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2952 transitions. [2019-10-15 03:18:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-10-15 03:18:19,107 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:18:19,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:18:19,108 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:18:19,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:18:19,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1439854813, now seen corresponding path program 1 times [2019-10-15 03:18:19,109 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:18:19,110 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628929305] [2019-10-15 03:18:19,110 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:19,110 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:19,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:18:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:18:19,574 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 03:18:19,575 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628929305] [2019-10-15 03:18:19,575 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:18:19,575 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-15 03:18:19,575 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692206426] [2019-10-15 03:18:19,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 03:18:19,576 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:18:19,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 03:18:19,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:18:19,577 INFO L87 Difference]: Start difference. First operand 1987 states and 2952 transitions. Second operand 11 states. [2019-10-15 03:18:22,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:18:22,955 INFO L93 Difference]: Finished difference Result 2732 states and 3822 transitions. [2019-10-15 03:18:22,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:18:22,956 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 238 [2019-10-15 03:18:22,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:18:22,976 INFO L225 Difference]: With dead ends: 2732 [2019-10-15 03:18:22,976 INFO L226 Difference]: Without dead ends: 2307 [2019-10-15 03:18:22,980 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:18:22,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2019-10-15 03:18:23,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2290. [2019-10-15 03:18:23,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2290 states. [2019-10-15 03:18:23,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 3309 transitions. [2019-10-15 03:18:23,131 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 3309 transitions. Word has length 238 [2019-10-15 03:18:23,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:18:23,132 INFO L462 AbstractCegarLoop]: Abstraction has 2290 states and 3309 transitions. [2019-10-15 03:18:23,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 03:18:23,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 3309 transitions. [2019-10-15 03:18:23,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2019-10-15 03:18:23,150 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:18:23,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:18:23,151 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:18:23,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:18:23,151 INFO L82 PathProgramCache]: Analyzing trace with hash 135113433, now seen corresponding path program 1 times [2019-10-15 03:18:23,151 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:18:23,152 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518189481] [2019-10-15 03:18:23,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:23,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:23,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:18:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:18:23,339 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 03:18:23,340 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518189481] [2019-10-15 03:18:23,341 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:18:23,341 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:18:23,341 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376761145] [2019-10-15 03:18:23,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:18:23,342 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:18:23,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:18:23,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:18:23,342 INFO L87 Difference]: Start difference. First operand 2290 states and 3309 transitions. Second operand 3 states. [2019-10-15 03:18:23,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:18:23,469 INFO L93 Difference]: Finished difference Result 5676 states and 8525 transitions. [2019-10-15 03:18:23,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:18:23,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 254 [2019-10-15 03:18:23,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:18:23,493 INFO L225 Difference]: With dead ends: 5676 [2019-10-15 03:18:23,493 INFO L226 Difference]: Without dead ends: 3444 [2019-10-15 03:18:23,504 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:18:23,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2019-10-15 03:18:23,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 3442. [2019-10-15 03:18:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3442 states. [2019-10-15 03:18:23,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3442 states to 3442 states and 5245 transitions. [2019-10-15 03:18:23,729 INFO L78 Accepts]: Start accepts. Automaton has 3442 states and 5245 transitions. Word has length 254 [2019-10-15 03:18:23,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:18:23,729 INFO L462 AbstractCegarLoop]: Abstraction has 3442 states and 5245 transitions. [2019-10-15 03:18:23,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:18:23,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3442 states and 5245 transitions. [2019-10-15 03:18:23,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2019-10-15 03:18:23,750 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:18:23,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:18:23,751 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:18:23,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:18:23,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1780480681, now seen corresponding path program 1 times [2019-10-15 03:18:23,751 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:18:23,752 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411281783] [2019-10-15 03:18:23,752 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:23,752 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:23,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:18:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:18:23,950 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 03:18:23,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411281783] [2019-10-15 03:18:23,951 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:18:23,951 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:18:23,951 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388580626] [2019-10-15 03:18:23,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:18:23,952 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:18:23,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:18:23,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:18:23,953 INFO L87 Difference]: Start difference. First operand 3442 states and 5245 transitions. Second operand 3 states. [2019-10-15 03:18:24,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:18:24,138 INFO L93 Difference]: Finished difference Result 9036 states and 14173 transitions. [2019-10-15 03:18:24,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:18:24,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 255 [2019-10-15 03:18:24,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:18:24,175 INFO L225 Difference]: With dead ends: 9036 [2019-10-15 03:18:24,175 INFO L226 Difference]: Without dead ends: 5652 [2019-10-15 03:18:24,190 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:18:24,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2019-10-15 03:18:24,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 5650. [2019-10-15 03:18:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5650 states. [2019-10-15 03:18:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5650 states to 5650 states and 8925 transitions. [2019-10-15 03:18:24,527 INFO L78 Accepts]: Start accepts. Automaton has 5650 states and 8925 transitions. Word has length 255 [2019-10-15 03:18:24,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:18:24,529 INFO L462 AbstractCegarLoop]: Abstraction has 5650 states and 8925 transitions. [2019-10-15 03:18:24,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:18:24,529 INFO L276 IsEmpty]: Start isEmpty. Operand 5650 states and 8925 transitions. [2019-10-15 03:18:24,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-10-15 03:18:24,560 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:18:24,561 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:18:24,561 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:18:24,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:18:24,562 INFO L82 PathProgramCache]: Analyzing trace with hash 772246329, now seen corresponding path program 1 times [2019-10-15 03:18:24,562 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:18:24,562 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253277250] [2019-10-15 03:18:24,562 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:24,563 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:24,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:18:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:18:24,889 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 03:18:24,889 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253277250] [2019-10-15 03:18:24,890 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:18:24,890 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:18:24,890 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349190015] [2019-10-15 03:18:24,891 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:18:24,891 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:18:24,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:18:24,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:18:24,892 INFO L87 Difference]: Start difference. First operand 5650 states and 8925 transitions. Second operand 3 states. [2019-10-15 03:18:25,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:18:25,296 INFO L93 Difference]: Finished difference Result 15468 states and 24893 transitions. [2019-10-15 03:18:25,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:18:25,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 256 [2019-10-15 03:18:25,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:18:25,378 INFO L225 Difference]: With dead ends: 15468 [2019-10-15 03:18:25,378 INFO L226 Difference]: Without dead ends: 9876 [2019-10-15 03:18:25,402 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:18:25,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9876 states. [2019-10-15 03:18:25,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9876 to 9874. [2019-10-15 03:18:25,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9874 states. [2019-10-15 03:18:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9874 states to 9874 states and 15901 transitions. [2019-10-15 03:18:26,617 INFO L78 Accepts]: Start accepts. Automaton has 9874 states and 15901 transitions. Word has length 256 [2019-10-15 03:18:26,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:18:26,617 INFO L462 AbstractCegarLoop]: Abstraction has 9874 states and 15901 transitions. [2019-10-15 03:18:26,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:18:26,617 INFO L276 IsEmpty]: Start isEmpty. Operand 9874 states and 15901 transitions. [2019-10-15 03:18:26,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2019-10-15 03:18:26,670 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:18:26,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:18:26,671 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:18:26,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:18:26,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1264854455, now seen corresponding path program 1 times [2019-10-15 03:18:26,672 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:18:26,673 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116559167] [2019-10-15 03:18:26,673 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:26,673 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:18:26,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:18:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:18:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-15 03:18:27,204 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116559167] [2019-10-15 03:18:27,204 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986100358] [2019-10-15 03:18:27,205 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 [2019-10-15 03:18:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:18:27,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 3533 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:18:27,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:18:28,100 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-15 03:18:28,100 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:18:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 03:18:28,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1740585096] [2019-10-15 03:18:28,676 INFO L162 IcfgInterpreter]: Started Sifa with 208 locations of interest [2019-10-15 03:18:28,677 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:18:28,687 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:18:28,693 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:18:28,694 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs